變更 Cassandra 壓縮策略

Apigee 會使用 Cassandra 資料庫儲存大部分的資料，包括 Proxy、快取和權杖 壓縮是縮減資料大小的標準程序 這些資料對於確保 資料庫能有效率地執行Cassandra 支援多種壓縮策略。Apigee 建議私有雲客戶的所有 Edge 使用 Cassandra 叢集 策略「LeveledCompactionStrategy」，而非預設策略 SizeTieredCompactionStrategy，適用於所有資料欄系列。LeveledCompactionStrategy 提高效能、改善磁碟使用率、效率 ，且所需的可用空間少於 SizedTieredCompactionStrategy。

往後安裝 Apigee 4.51.00 以上版本時，系統會自動設定 Cassandra 只在 LeveledCompactionStrategy。不過，如果您使用的是舊版 Apigee 或 已從舊版升級至 Apigee 4.51.00，目前您的版本可能仍在使用 Cassandra 只在 SizeTieredCompactionStrategy。 如要找出您的 Cassandra 版本，請參閱 「檢查壓縮策略」一節。

本頁說明如何將壓縮策略變更為 LeveledCompactionStrategy。

準備

查看現有的壓縮策略

如要查看資料欄系列現有的壓縮策略，請按照 檢查密集策略。如果採用壓縮策略 已經是 LeveledCompactionStrategy，您不必追蹤其餘 請參閱本頁的操作說明。

備份

因為變更密集策略，會在 C* 節點中觸發完整的壓縮週期。可能會導入 導致某些延遲。復原 可能需要此變更，才能從備份還原 Cassandra 節點。 請參閱如何 備份，瞭解如何在變更壓縮策略前備份資料。

壓縮處理量

將壓縮策略變更為 LeveledCompactionStrategy 後，壓縮為 好像我們願意繼續說 他們耐心等待視資料壓縮的大小而定，執行階段可能會有所不同。壓縮期間 因此 Cassandra 可能會使用更多系統資源。確保壓縮不會佔用太多空間 系統資源可能會中斷 API 執行階段要求，建議您為 以及壓縮處理量

在每個節點上執行下列 nodetool 指令，將壓縮處理量設為最大值 所有 C* 節點的 128 MB：

nodetool setcompactionthroughput 128

調整 VM 大小以進行壓縮

請先確認 C* 節點具備充足的 CPU/記憶體資源，再執行這項變更。請確認 在執行這項變更之前，沒有任何 C* 節點在 CPU 負載超過 25% 運作。

完成壓縮策略後，將會執行整個壓縮週期，因此 在流量偏低時變更密集策略。

分段跑步

您可能無法在一天內完成所有節點的變更 大型 Cassandra 叢集，因為需要在每個節點上逐一重新建構索引。您可以調整 選擇單一結構定義或一個資料欄系列 (資料表) 的壓縮策略。在這個情況下，請將 變更其壓縮策略，然後在資料表中重建所有索引 在所有節點上執行 (如有)。然後針對每個資料表或索引鍵空間重複執行上述程序。這類跑步 可以細分為一個資料表或一個鍵空間，並執行不同的日期。

例如，若要變更下列數量的 oauth_20_access_tokens 資料欄系列的密集策略： kms 結構定義，您可以執行以下操作：

  1. 修改表格以變更壓縮策略： 
       
ALTER TABLE kms.oauth_20_access_tokens WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  2. 重新建構僅有這個資料表的所有索引： 
    nodetool rebuild_index kms oauth_20_access_tokens oauth_20_access_tokens_app_id_idx
nodetool rebuild_index kms oauth_20_access_tokens oauth_20_access_tokens_client_id_idx
nodetool rebuild_index kms oauth_20_access_tokens oauth_20_access_tokens_refresh_token_idx

變更壓縮策略

整體而言，變更壓縮策略需要兩個步驟：

  1. 修改每份表格的壓縮策略。
  2. 逐一重新建構每個節點上的所有索引。

修改表格以設定新的壓縮策略

對任何 Cassandra 節點執行下列 Cassandra 查詢語言 (CQL) 指令，變更 第一類應用程式的策略 索引鍵空間您可以在 cql 提示中執行 CQL。如要叫用 cql 提示：

/opt/apigee/apigee-cassandra/bin/cqlsh `hostname -i`

您會看到類似下方的回應：

Connected to apigee at XX.XX.XX.XX:9042.
[cqlsh 5.0.1 | Cassandra 2.1.16 | CQL spec 3.2.1 | Native
protocol v3]
Use HELP for help.
cqlsh>

執行下列 CQL，變更壓縮策略：

  • 可變更鍵空間「kms」的壓縮策略： 
    ALTER TABLE kms.organizations WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.maps WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.apps WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.app_credentials WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.api_products WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.apiproducts_appslist WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.api_resources WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.app_end_user WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.oauth_20_authorization_codes WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.oauth_20_access_tokens WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.oauth_10_request_tokens WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.oauth_10_access_tokens WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.oauth_10_verifiers WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE kms.app_enduser_tokens WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「user_settings」的壓縮策略： 
    ALTER TABLE user_settings.user_settings WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「keyvaluemap」的壓縮策略： 
       
ALTER TABLE keyvaluemap.keyvaluemaps_r21 WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「devconnect」的壓縮策略： 
        
ALTER TABLE devconnect.developers WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE devconnect.companies WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE devconnect.company_developers WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「counter」的壓縮策略： 
    ALTER TABLE counter.counters_current_version WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE counter.counters_with_expiry WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE counter.counters WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE counter.key_timestamp_count WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE counter.timestamp_key WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE counter.period_timestamp WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE counter.gateway_quota WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「cache」的壓縮策略： 
    ALTER TABLE cache.cache_entries WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE cache.cache_sequence_id_r24 WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「ax_custom_report_model」的壓縮策略： 
    ALTER TABLE ax_custom_report_model.report_description WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE ax_custom_report_model.report_id_lookup WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE ax_custom_report_model.org_metadata WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE ax_custom_report_model.org_report_lookup WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE ax_custom_report_model.report_created_view WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE ax_custom_report_model.report_viewed_view WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「auth」的壓縮策略： 
    ALTER TABLE auth.totp WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「audit」的壓縮策略： 
    ALTER TABLE audit.audits WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE audit.audits_ref WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「apprepo」的壓縮策略： 
    ALTER TABLE apprepo.organizations WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apprepo.environments WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apprepo.apiproxies WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apprepo.apiproxy_revisions WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apprepo.api_proxy_revisions_r21 WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「apimodel」的壓縮策略： 
    ALTER TABLE apimodel.apis WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apimodel.apis_revision WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apimodel.resource WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apimodel.method WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apimodel.revision_counters WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apimodel.template_counters WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apimodel.template WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apimodel.credentials WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apimodel.credentialsv2 WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apimodel.schemas WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apimodel.security WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE apimodel.template_auth WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「identityzone」的壓縮策略： 
    ALTER TABLE identityzone.IdentityZones WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE identityzone.OrgToIdentityZone WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「dek」的壓縮策略： 
    ALTER TABLE dek.keys WITH compaction = {'class' : 'LeveledCompactionStrategy'};
  • 可變更鍵空間「analytics」的壓縮策略： 
    ALTER TABLE analytics.custom_aggregates_defn WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE analytics.custom_rules_defn WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE analytics.custom_aggregates_defn_updates WITH compaction = {'class' : 'LeveledCompactionStrategy'};
ALTER TABLE analytics.custom_rules_defn_updates WITH compaction = {'class' : 'LeveledCompactionStrategy'};

重建索引

您必須在壓縮策略變更後執行此步驟。執行下列指令 nodetool 指令依序為每個 Cassandra 節點逐一執行。

執行下列 nodetool 指令來重新建構索引：

  • 重新建構鍵空間 kms 的索引： 
    nodetool rebuild_index kms maps maps_organization_name_idx
nodetool rebuild_index kms apps apps_app_family_idx
nodetool rebuild_index kms apps apps_app_id_idx
nodetool rebuild_index kms apps apps_app_type_idx
nodetool rebuild_index kms apps apps_name_idx
nodetool rebuild_index kms apps apps_organization_name_idx
nodetool rebuild_index kms apps apps_parent_id_idx
nodetool rebuild_index kms apps apps_parent_status_idx
nodetool rebuild_index kms apps apps_status_idx
nodetool rebuild_index kms app_credentials app_credentials_api_products_idx
nodetool rebuild_index kms app_credentials app_credentials_organization_app_id_idx
nodetool rebuild_index kms app_credentials app_credentials_organization_name_idx
nodetool rebuild_index kms api_products api_products_organization_name_idx
nodetool rebuild_index kms app_end_user app_end_user_app_id_idx
nodetool rebuild_index kms oauth_20_authorization_codes oauth_20_authorization_codes_client_id_idx
nodetool rebuild_index kms oauth_20_authorization_codes oauth_20_authorization_codes_organization_name_idx
nodetool rebuild_index kms oauth_20_access_tokens oauth_20_access_tokens_app_id_idx
nodetool rebuild_index kms oauth_20_access_tokens oauth_20_access_tokens_client_id_idx
nodetool rebuild_index kms oauth_20_access_tokens oauth_20_access_tokens_refresh_token_idx
nodetool rebuild_index kms oauth_10_request_tokens oauth_10_request_tokens_consumer_key_idx
nodetool rebuild_index kms oauth_10_request_tokens oauth_10_request_tokens_organization_name_idx
nodetool rebuild_index kms oauth_10_access_tokens oauth_10_access_tokens_app_id_idx
nodetool rebuild_index kms oauth_10_access_tokens oauth_10_access_tokens_consumer_key_idx
nodetool rebuild_index kms oauth_10_access_tokens oauth_10_access_tokens_organization_name_idx
nodetool rebuild_index kms oauth_10_access_tokens oauth_10_access_tokens_status_idx
nodetool rebuild_index kms oauth_10_verifiers oauth_10_verifiers_organization_name_idx
nodetool rebuild_index kms oauth_10_verifiers oauth_10_verifiers_request_token_idx
  • 重新建構鍵空間 devconnect 的索引： 
    nodetool rebuild_index devconnect companies companies_name_idx
nodetool rebuild_index devconnect companies companies_organization_name_idx
nodetool rebuild_index devconnect companies companies_status_idx
nodetool rebuild_index devconnect company_developers company_developers_company_name_idx
nodetool rebuild_index devconnect company_developers company_developers_developer_email_idx
nodetool rebuild_index devconnect company_developers company_developers_organization_name_idx
nodetool rebuild_index devconnect developers developers_email_idx
nodetool rebuild_index devconnect developers developers_organization_name_idx
nodetool rebuild_index devconnect developers developers_status_idx
  • 重新建構鍵空間 cache 的索引： 
        
nodetool rebuild_index cache cache_entries cache_entries_cache_name_idx
  • 重新建構鍵空間 audit 的索引： 
    nodetool rebuild_index audit audits audits_operation_idx
nodetool rebuild_index audit audits audits_requesturi_idx
nodetool rebuild_index audit audits audits_responsecode_idx
nodetool rebuild_index audit audits audits_timestamp_idx
nodetool rebuild_index audit audits audits_user_idx
  • 重新建構鍵空間 apprepo 的索引： 
    nodetool rebuild_index apprepo environments environments_organization_name_idx
  • 重新建構鍵空間 apimodel 的索引： 
    nodetool rebuild_index apimodel apis a_name
nodetool rebuild_index apimodel apis a_org_name
nodetool rebuild_index apimodel apis_revision ar_a_name
nodetool rebuild_index apimodel apis_revision ar_a_uuid
nodetool rebuild_index apimodel apis_revision ar_base_url
nodetool rebuild_index apimodel apis_revision ar_is_active
nodetool rebuild_index apimodel apis_revision ar_is_latest
nodetool rebuild_index apimodel apis_revision ar_org_name
nodetool rebuild_index apimodel apis_revision ar_rel_ver
nodetool rebuild_index apimodel apis_revision ar_rev_num
nodetool rebuild_index apimodel resource r_a_name
nodetool rebuild_index apimodel resource r_api_uuid
nodetool rebuild_index apimodel resource r_ar_uuid
nodetool rebuild_index apimodel resource r_base_url
nodetool rebuild_index apimodel resource r_name
nodetool rebuild_index apimodel resource r_org_name
nodetool rebuild_index apimodel resource r_res_path
nodetool rebuild_index apimodel resource r_rev_num
nodetool rebuild_index apimodel method m_a_name
nodetool rebuild_index apimodel method m_api_uuid
nodetool rebuild_index apimodel method m_ar_uuid
nodetool rebuild_index apimodel method m_base_url
nodetool rebuild_index apimodel method m_name
nodetool rebuild_index apimodel method m_org_name
nodetool rebuild_index apimodel method m_r_name
nodetool rebuild_index apimodel method m_r_uuid
nodetool rebuild_index apimodel method m_res_path
nodetool rebuild_index apimodel method m_rev_num
nodetool rebuild_index apimodel method m_verb
nodetool rebuild_index apimodel template t_a_name
nodetool rebuild_index apimodel template t_a_uuid
nodetool rebuild_index apimodel template t_entity
nodetool rebuild_index apimodel template t_name
nodetool rebuild_index apimodel template t_org_name
nodetool rebuild_index apimodel schemas s_api_uuid
nodetool rebuild_index apimodel schemas s_ar_uuid
nodetool rebuild_index apimodel security sa_api_uuid
nodetool rebuild_index apimodel security sa_ar_uuid
nodetool rebuild_index apimodel template_auth au_api_uuid
  • 重新建構鍵空間 dek 的索引： 
    nodetool rebuild_index dek keys usecase_index

驗證

  1. 請按照下列步驟操作，檢查結構定義變更是否已生效 操作說明 請參閱「檢查壓縮策略」一文。
  2. 驗證壓縮是否成功執行，並在策略變更後進行資料調整：
    1. 在每個 Cassandra 節點上執行下列 nodetool 指令，確認所有壓縮作業是否都含有 已完成，但沒有待處理狀態： 
      nodetool compactionstats
    2. 使用上述指令進行驗證後，確認沒有待處理的壓縮作業後，請檢查 資料檔案上次修改時間戳記 (在 /opt/apigee/data/apigee-cassandra/data/) 緊接在執行壓縮策略變更 CQL 時的時間戳記之後。

復原

如需復原，您可以採取下列其中一種做法：

選項 1：還原變更

將壓縮策略復原為 SizeTieredCompactionStrategy。

針對任一個 Cassandra 節點變更策略，執行以下 CQL 索引鍵空間您可以在 cql 提示中執行 CQL。如要叫用 cql 提示：

/opt/apigee/apigee-cassandra/bin/cqlsh `hostname -i`

您會看到類似下方的回應：

Connected to apigee at XX.XX.XX.XX:9042.
[cqlsh 5.0.1 | Cassandra 2.1.16 | CQL spec 3.2.1 | Native
protocol v3]
Use HELP for help.
cqlsh>

執行下列 CQL，變更壓縮策略：

  • 可變更鍵空間「kms」的壓縮策略： 
    ALTER TABLE kms.organizations WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.maps WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.apps WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.app_credentials WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.api_products WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.apiproducts_appslist WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.api_resources WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.app_end_user WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.oauth_20_authorization_codes WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.oauth_20_access_tokens WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.oauth_10_request_tokens WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.oauth_10_access_tokens WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.oauth_10_verifiers WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE kms.app_enduser_tokens WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「user_settings」的壓縮策略： 
    ALTER TABLE user_settings.user_settings WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「keyvaluemap」的壓縮策略： 
    ALTER TABLE keyvaluemap.keyvaluemaps_r21 WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「devconnect」的壓縮策略： 
    ALTER TABLE devconnect.developers WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE devconnect.companies WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE devconnect.company_developers WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「counter」的壓縮策略： 
    ALTER TABLE counter.counters_current_version WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE counter.counters_with_expiry WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE counter.counters WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE counter.key_timestamp_count WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE counter.timestamp_key WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE counter.period_timestamp WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE counter.gateway_quota WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「cache」的壓縮策略： 
    ALTER TABLE cache.cache_entries WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE cache.cache_sequence_id_r24 WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「ax_custom_report_model」的壓縮策略： 
    ALTER TABLE ax_custom_report_model.report_description WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE ax_custom_report_model.report_id_lookup WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE ax_custom_report_model.org_metadata WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE ax_custom_report_model.org_report_lookup WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE ax_custom_report_model.report_created_view WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE ax_custom_report_model.report_viewed_view WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「auth」的壓縮策略： 
    ALTER TABLE auth.totp WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「audit」的壓縮策略： 
    ALTER TABLE audit.audits WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE audit.audits_ref WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「apprepo」的壓縮策略： 
    ALTER TABLE apprepo.organizations WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apprepo.environments WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apprepo.apiproxies WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apprepo.apiproxy_revisions WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apprepo.api_proxy_revisions_r21 WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「apimodel」的壓縮策略： 
    ALTER TABLE apimodel.apis WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apimodel.apis_revision WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apimodel.resource WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apimodel.method WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apimodel.revision_counters WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apimodel.template_counters WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apimodel.template WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apimodel.credentials WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apimodel.credentialsv2 WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apimodel.schemas WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apimodel.security WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE apimodel.template_auth WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「identityzone」的壓縮策略： 
    ALTER TABLE identityzone.IdentityZones WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE identityzone.OrgToIdentityZone WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「dek」的壓縮策略： 
        
ALTER TABLE dek.keys WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
  • 可變更鍵空間「analytics」的壓縮策略： 
    ALTER TABLE analytics.custom_aggregates_defn WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE analytics.custom_rules_defn WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE analytics.custom_aggregates_defn_updates WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
ALTER TABLE analytics.custom_rules_defn_updates WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};

所有資料欄系列都修改完畢後，如果您已重建索引 將壓縮策略變更為 LeveledCompactionStrategy，則需重新建構索引 可以選取「重新建立」，再次生成新的提示按照前述的相同步驟重建 所有索引。如果您之前沒有重建索引，則在處理期間不需要重建索引

選項 2：從備份還原完整資料

如要執行完整資料還原作業，請參閱 從備份還原。

檢查密集策略

壓縮策略是在 Cassandra 中的資料欄系列 (資料表) 層級設定。您可以使用 檢查下方的 CQL 查詢，檢查每個資料欄系列的壓縮策略。

您可以在 cql 提示中執行 CQL。 如要叫用 cql 提示：

/opt/apigee/apigee-cassandra/bin/cqlsh `hostname -i`

您會看到類似下方的回應：

Connected to apigee at XX.XX.XX.XX:9042.
[cqlsh 5.0.1 | Cassandra 2.1.16 | CQL spec 3.2.1 | Native
protocol v3]
Use HELP for help.
cqlsh>

您可以按照下列方式判斷目前的壓縮策略：

  • 如果壓縮策略設為 SizeTieredCompactionStrategy，系統會輸出輸出內容 以下查詢將為 org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy。
  • 如果壓縮策略設為 LeveledCompactionStrategy，則 下列查詢會是 org.apache.cassandra.db.compaction.LeveledCompactionStrategy。

請執行下列 CQL，確認壓縮策略：

  • 用於驗證索引鍵空間 kms 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'organizations';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'maps';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'apps';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'app_credentials';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'api_products';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'apiproducts_appslist';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'api_resources';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'app_end_user';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'oauth_20_authorization_codes';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'oauth_20_access_tokens';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'oauth_10_request_tokens';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'oauth_10_access_tokens';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'oauth_10_verifiers';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name ='kms' and columnfamily_name = 'app_enduser_tokens';
  • 用於驗證索引鍵空間 user_settings 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'user_settings' and columnfamily_name = 'user_settings';
  • 用於驗證索引鍵空間 keyvaluemap 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'keyvaluemap' and columnfamily_name = 'keyvaluemaps_r21';
  • 用於驗證索引鍵空間 devconnect 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'devconnect' and columnfamily_name = 'developers';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'devconnect' and columnfamily_name = 'companies';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'devconnect' and columnfamily_name = 'company_developers';
  • 用於驗證索引鍵空間 counter 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'counter' and columnfamily_name = 'counters_current_version';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'counter' and columnfamily_name = 'counters_with_expiry';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'counter' and columnfamily_name = 'counters';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'counter' and columnfamily_name = 'key_timestamp_count';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'counter' and columnfamily_name = 'timestamp_key';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'counter' and columnfamily_name = 'period_timestamp';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'counter' and columnfamily_name = 'gateway_quota';
  • 用於驗證索引鍵空間 cache 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'cache' and columnfamily_name = 'cache_entries';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'cache' and columnfamily_name = 'cache_sequence_id_r24';
  • 用於驗證索引鍵空間 ax_custom_report_model 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'ax_custom_report_model' and columnfamily_name = 'report_description';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'ax_custom_report_model' and columnfamily_name = 'report_id_lookup';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'ax_custom_report_model' and columnfamily_name = 'org_metadata';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'ax_custom_report_model' and columnfamily_name = 'org_report_lookup';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'ax_custom_report_model' and columnfamily_name = 'report_created_view';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'ax_custom_report_model' and columnfamily_name = 'report_viewed_view';
  • 用於驗證索引鍵空間 auth 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'auth' and columnfamily_name = 'totp';
  • 用於驗證索引鍵空間 audit 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'audit' and columnfamily_name = 'audits';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'audit' and columnfamily_name = 'audits_ref';
  • 用於驗證索引鍵空間 apprepo 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apprepo' and columnfamily_name = 'organizations';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apprepo' and columnfamily_name = 'environments';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apprepo' and columnfamily_name = 'apiproxies';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apprepo' and columnfamily_name = 'apiproxy_revisions';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apprepo' and columnfamily_name = 'api_proxy_revisions_r21';
  • 用於驗證索引鍵空間 apimodel 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apimodel' and columnfamily_name = 'apis';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apimodel' and columnfamily_name = 'apis_revision';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apimodel' and columnfamily_name = 'resource';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apimodel' and columnfamily_name = 'method';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apimodel' and columnfamily_name = 'revision_counters';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apimodel' and columnfamily_name = 'template_counters';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apimodel' and columnfamily_name = 'template';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apimodel' and columnfamily_name = 'credentials';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apimodel' and columnfamily_name = 'credentialsv2';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apimodel' and columnfamily_name = 'schemas';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apimodel' and columnfamily_name = 'security';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'apimodel' and columnfamily_name = 'template_auth';
  • 用於驗證索引鍵空間 identityzone 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'identityzone' and columnfamily_name = 'identityzones';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'identityzone' and columnfamily_name = 'orgtoidentityzone';
  • 用於驗證索引鍵空間 dek 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'dek' and columnfamily_name = 'keys';
  • 用於驗證索引鍵空間 analytics 的壓縮策略的 CQL： 
    SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'analytics' and columnfamily_name = 'custom_aggregates_defn';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'analytics' and columnfamily_name = 'custom_rules_defn';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'analytics' and columnfamily_name = 'custom_aggregates_defn_updates';
SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'analytics' and columnfamily_name = 'custom_rules_defn_updates';