surekhasaharan opened a new pull request #6094: Introduce SystemSchema tables (#5989) URL: https://github.com/apache/incubator-druid/pull/6094 SYSTEM_TABLES provide visibility into the druid segments, servers and tasks. * SEGMENTS table provides details on served and published segments * SERVERS table provides details on data servers * SERVERSEGMETS table is the JOIN of SEGMENTS and SERVERS * TASKS table provides details on tasks from overlord Sample sql queries to retrieve data from these tables: ```sql select * from SYS.SEGMENTS where DATASOURCE='wikipedia'; select * from SYS.SERVERS; select * from SYS.TASKS where STATUS='FAILED'; ```
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