Apigee 使用 Cassandra 数据库来存储其大部分数据,包括
代理、缓存和令牌。
压缩是缩减数据大小的标准过程
存储在数据库中,这对于确保
数据库的效率。Cassandra 支持各种压缩策略。Apigee
建议所有 Edge for Private Cloud 客户都使用
策略LeveledCompactionStrategy
,而不是默认策略
SizeTieredCompactionStrategy
(适用于所有列族)。LeveledCompactionStrategy
可提供更好的性能、更高的磁盘利用率、更高的效率
压缩,并且所需的可用空间少于 SizedTieredCompactionStrategy
。
Apigee 4.51.00 或更高版本的所有新安装都将自动设置 Cassandra
尽在 LeveledCompactionStrategy
。不过,如果您使用的是旧版
Apigee 或
已从较低版本升级到 Apigee 4.51.00,那么您的版本可能仍在使用 Cassandra
尽在 SizeTieredCompactionStrategy
。
如需了解您的 Cassandra 版本使用的是哪种压缩策略,请参阅
检查压缩策略部分。
本页面介绍了如何将压缩策略更改为
LeveledCompactionStrategy
。
准备工作
检查现有的压缩策略
如需检查列族的现有压缩策略,请按照
检查压缩策略。如果压缩策略
已LeveledCompactionStrategy
,因此无需遵循
说明。
备份
由于更改压缩策略会在 C* 节点中触发完整的压缩周期。可能会引入 因为压缩负载和并发应用流量造成的一些延迟。回滚 来从备份恢复 Cassandra 节点。 有关详情,请参阅 以了解如何在更改压缩策略之前备份数据。
压缩吞吐量
压缩策略更改为 LeveledCompactionStrategy
后,
。运行时可能会因数据压缩的大小而异。压缩期间
所以 Cassandra 可能会占用更多系统资源。为了确保压缩不会占用过多空间
这可能会中断 API 运行时请求,我们建议您为
压缩吞吐量
在每个节点上运行以下 nodetool
命令,将压缩吞吐量设置为最大值
所有 C* 节点上的 128MB:
nodetool setcompactionthroughput 128
调整虚拟机的大小以进行压缩
在执行此更改之前,请确保 C* 节点具有足够的 CPU/内存资源。请确保 在执行此更改之前,没有 C* 节点的运行时间超过 CPU 负载的 25%。
压缩策略更改后,预计将运行完整的压缩周期,因此 建议在低流量期间更改压缩策略。
交错运行
您可能无法在一天内完成所有节点的更改,尤其是当您 大型 Cassandra 集群,因为需要在每个节点上逐个重建索引。您可以更改 一次一个架构或一个列族(表)的压缩策略。为此,请将 列族以更改其压缩策略,然后重新构建表上的所有索引 (如果有)。然后对每个表或键空间重复上述过程。此类运行 一个表或一个键空间的数据可以细分,在不同的日期运行。
例如,如需在以下位置更改 oauth_20_access_tokens
列族的压缩策略:
kms
架构,您可以执行以下操作:
- 更改表以更改压缩策略:
ALTER TABLE kms.oauth_20_access_tokens WITH compaction = {'class' : 'LeveledCompactionStrategy'};
- 仅重新构建此表的所有索引:
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
更改压缩策略
概括来讲,更改压缩策略包含两个步骤:
- 修改每个表的压缩策略。
- 逐个重新构建每个节点上的所有索引。
更改表以设置新的压缩策略
在任意一个 Cassandra 节点上运行以下 Cassandra 查询语言 (CQL) 命令,将
策略
键空间。您可以在 cql
提示符下运行 CQL。要调用
cql
提示:
/opt/apigee/apigee-cassandra/bin/cqlsh `hostname -i`
您将看到如下所示的响应:
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>
运行以下 CQL 以更改压缩策略:
- 用于更改键空间
kms
的压缩策略的 CQL: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'};
- 用于更改键空间
user_settings
的压缩策略的 CQL:ALTER TABLE user_settings.user_settings WITH compaction = {'class' : 'LeveledCompactionStrategy'};
- 用于更改键空间
keyvaluemap
的压缩策略的 CQL:ALTER TABLE keyvaluemap.keyvaluemaps_r21 WITH compaction = {'class' : 'LeveledCompactionStrategy'};
- 用于更改键空间
devconnect
的压缩策略的 CQL: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'};
- 用于更改键空间
counter
的压缩策略的 CQL: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'};
- 用于更改键空间
cache
的压缩策略的 CQL:ALTER TABLE cache.cache_entries WITH compaction = {'class' : 'LeveledCompactionStrategy'}; ALTER TABLE cache.cache_sequence_id_r24 WITH compaction = {'class' : 'LeveledCompactionStrategy'};
- 用于更改键空间
ax_custom_report_model
的压缩策略的 CQL: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'};
- 用于更改键空间
auth
的压缩策略的 CQL:ALTER TABLE auth.totp WITH compaction = {'class' : 'LeveledCompactionStrategy'};
- 用于更改键空间
audit
的压缩策略的 CQL:ALTER TABLE audit.audits WITH compaction = {'class' : 'LeveledCompactionStrategy'}; ALTER TABLE audit.audits_ref WITH compaction = {'class' : 'LeveledCompactionStrategy'};
- 用于更改键空间
apprepo
的压缩策略的 CQL: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'};
- 用于更改键空间
apimodel
的压缩策略的 CQL: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'};
- 用于更改键空间
identityzone
的压缩策略的 CQL:ALTER TABLE identityzone.IdentityZones WITH compaction = {'class' : 'LeveledCompactionStrategy'}; ALTER TABLE identityzone.OrgToIdentityZone WITH compaction = {'class' : 'LeveledCompactionStrategy'};
- 用于更改键空间
dek
的压缩策略的 CQL:ALTER TABLE dek.keys WITH compaction = {'class' : 'LeveledCompactionStrategy'};
- 用于更改键空间
analytics
的压缩策略的 CQL: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'};
重新构建索引
您需要在压缩策略更改后执行此步骤。运行以下命令
在每个 Cassandra 节点上逐个执行 nodetool
命令。
运行以下 nodetool
命令以重建索引:
- 重新构建键空间
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
- 重新构建键空间
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
- 重新构建键空间
cache
的索引:nodetool rebuild_index cache cache_entries cache_entries_cache_name_idx
- 重新构建键空间
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
- 重新构建键空间
apprepo
的索引:nodetool rebuild_index apprepo environments environments_organization_name_idx
- 重新构建键空间
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
- 重新构建键空间
dek
的索引:nodetool rebuild_index dek keys usecase_index
验证
- 运行以下命令,检查对架构的压缩策略更改是否已生效 操作说明 请参阅检查压缩策略。
- 验证压缩是否已成功运行,以及数据在策略更改后是否进行了压缩:
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- </ph>
- 在每个 Cassandra 节点上,运行以下
nodetool
命令以查看所有压缩是否均已压缩 已完成,且没有待处理的请求:nodetool compactionstats
- 使用上面的命令进行验证后,确保没有待处理的压缩,请检查 数据文件的上次修改时间戳(在 /opt/apigee/data/apigee-cassandra/data/ 下) 应该在执行压缩策略更改 CQL 时的时间戳之后。
- 在每个 Cassandra 节点上,运行以下
回滚
如果您需要回滚,可以采用以下选项之一:
选项 1:还原更改
将压缩策略回滚到 SizeTieredCompactionStrategy
。
在任意一个 Cassandra 节点上运行以下 CQL,为节点更改策略
键空间。您可以在 cql
提示符处运行 CQL。如需调用 cql
提示符,请执行以下操作:
/opt/apigee/apigee-cassandra/bin/cqlsh `hostname -i`
您将看到如下所示的响应:
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>
运行以下 CQL 以更改压缩策略:
- 用于更改键空间
kms
的压缩策略的 CQL: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'};
- 用于更改键空间
user_settings
的压缩策略的 CQL:ALTER TABLE user_settings.user_settings WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
- 用于更改键空间
keyvaluemap
的压缩策略的 CQL:ALTER TABLE keyvaluemap.keyvaluemaps_r21 WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
- 用于更改键空间
devconnect
的压缩策略的 CQL: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'};
- 用于更改键空间
counter
的压缩策略的 CQL: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'};
-
用于更改键空间
cache
的压缩策略的 CQL:ALTER TABLE cache.cache_entries WITH compaction = {'class' : 'SizeTieredCompactionStrategy'}; ALTER TABLE cache.cache_sequence_id_r24 WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
- 用于更改键空间
ax_custom_report_model
的压缩策略的 CQL: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'};
- 用于更改键空间
auth
的压缩策略的 CQL:ALTER TABLE auth.totp WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
- 用于更改键空间
audit
的压缩策略的 CQL:ALTER TABLE audit.audits WITH compaction = {'class' : 'SizeTieredCompactionStrategy'}; ALTER TABLE audit.audits_ref WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
- 用于更改键空间
apprepo
的压缩策略的 CQL: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'};
- 用于更改键空间
apimodel
的压缩策略的 CQL: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'};
- 用于更改键空间
identityzone
的压缩策略的 CQL:ALTER TABLE identityzone.IdentityZones WITH compaction = {'class' : 'SizeTieredCompactionStrategy'}; ALTER TABLE identityzone.OrgToIdentityZone WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
- 用于更改键空间
dek
的压缩策略的 CQL:ALTER TABLE dek.keys WITH compaction = {'class' : 'SizeTieredCompactionStrategy'};
- 用于更改键空间
analytics
的压缩策略的 CQL: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'};
更改完所有列族之后(如果您在
将压缩策略更改为 LeveledCompactionStrategy
,则需要重新构建索引
。按照与之前相同的步骤重建
所有索引。如果您先前没有重建索引,那么在
回滚。
方法 2 - 使用备份恢复完整数据
要执行完整数据恢复,请参阅 从备份中恢复。
检查压缩策略
在 Cassandra 中,压缩策略在列族(表)级别设置。您可以使用 使用下面的 CQL 查询来检查每个列族的压缩策略。
您可以在 cql
提示符处运行 CQL。
如需调用 cql
提示,请执行以下操作:
/opt/apigee/apigee-cassandra/bin/cqlsh `hostname -i`
您将看到如下所示的响应:
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>
您可以按如下方式确定当前的压缩策略:
- 如果压缩策略设置为
SizeTieredCompactionStrategy
,则输出 100% 的以下查询将获得org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy
。 - 如果压缩策略设置为
LeveledCompactionStrategy
,则 以下查询将是org.apache.cassandra.db.compaction.LeveledCompactionStrategy
。
运行以下 CQL 以验证压缩策略:
- 使用 CQL 验证键空间
kms
的压缩策略: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';
- 使用 CQL 验证键空间
user_settings
的压缩策略:SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'user_settings' and columnfamily_name = 'user_settings';
- 使用 CQL 验证键空间
keyvaluemap
的压缩策略:SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'keyvaluemap' and columnfamily_name = 'keyvaluemaps_r21';
- 使用 CQL 验证键空间
devconnect
的压缩策略: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';
- 使用 CQL 验证键空间
counter
的压缩策略: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';
- 使用 CQL 验证键空间
cache
的压缩策略: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';
- 使用 CQL 验证键空间
ax_custom_report_model
的压缩策略: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';
- 使用 CQL 验证键空间
auth
的压缩策略:SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'auth' and columnfamily_name = 'totp';
- 使用 CQL 验证键空间
audit
的压缩策略: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';
- 使用 CQL 验证键空间
apprepo
的压缩策略: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';
- 使用 CQL 验证键空间
apimodel
的压缩策略: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';
- 使用 CQL 验证键空间
identityzone
的压缩策略: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';
- 使用 CQL 验证键空间
dek
的压缩策略:SELECT compaction_strategy_class from system.schema_columnfamilies where keyspace_name = 'dek' and columnfamily_name = 'keys';
- 使用 CQL 验证键空间
analytics
的压缩策略: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';