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https://issues.apache.org/jira/browse/AMBARI-15011?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sebastian Toader updated AMBARI-15011:
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Attachment: (was: AMBARI-15011-trunk.v3.patch)
> Decrease the load on ambari database after cluster creation
> -----------------------------------------------------------
>
> Key: AMBARI-15011
> URL: https://issues.apache.org/jira/browse/AMBARI-15011
> Project: Ambari
> Issue Type: Improvement
> Components: ambari-server
> Reporter: Sebastian Toader
> Assignee: Sebastian Toader
> Priority: Critical
> Fix For: 2.2.2
>
> Attachments: AMBARI-15011-2.2.1-maint.v4.patch,
> AMBARI-15011-branch-2.2.v4.patch, AMBARI-15011-trunk.v4.patch
>
>
> Decrease the load generated by queries that are periodically executed after
> cluster creation.
> Queries executed frequently:
> {code}
> SELECT t0.service_config_id, t0.cluster_id, t0.create_timestamp, t0.group_id,
> t0.note, t0.service_name, t0.user_name, t0.version, t0.stack_id FROM
> serviceconfig t0 WHERE ((t0.cluster_id = @P0) AND (t0.create_timestamp =
> (SELECT MAX(t1.create_timestamp) FROM serviceconfig t1 WHERE
> (((t1.service_name = t0.service_name) AND (t1.cluster_id = @P1)) AND
> (t1.group_id IS NULL)))))
> {code}
> {code}
> SELECT MAX(t0.skippable), MIN(t1.start_time), MAX(t1.end_time), t1.stage_id,
> SUM(CASE WHEN (t1.status = @P0) THEN @P1 ELSE @P2 END), SUM(CASE WHEN
> (t1.status = @P3) THEN @P4 ELSE @P5 END), SUM(CASE WHEN (t1.status = @P6)
> THEN @P7 ELSE @P8 END), SUM(CASE WHEN (t1.status = @P9) THEN @P10 ELSE @P11
> END), SUM(CASE WHEN (t1.status = @P12) THEN @P13 ELSE @P14 END), SUM(CASE
> WHEN (t1.status = @P15) THEN @P16 ELSE @P17 END), SUM(CASE WHEN (t1.status =
> @P18) THEN @P19 ELSE @P20 END), SUM(CASE WHEN (t1.status = @P21) THEN @P22
> ELSE @P23 END), SUM(CASE WHEN (t1.status = @P24) THEN @P25 ELSE @P26 END),
> SUM(CASE WHEN (t1.status = @P27) THEN @P28 ELSE @P29 END), SUM(CASE WHEN
> (t1.status = @P30) THEN @P31 ELSE @P32 END) FROM stage t0, host_role_command
> t1 WHERE ((t0.stage_id = t1.stage_id) AND (t0.request_id = t1.request_id))
> GROUP BY t1.request_id, t1.stage_id HAVING (t1.request_id = @P33)
> {code}
> {code}
> SELECT DISTINCT t0.task_id FROM host_role_command t0, hosts t1 WHERE
> ((((t1.host_name = @P0) AND (t0.role = @P1)) AND (t0.status = @P2)) AND
> (t1.host_id = t0.host_id)) ORDER BY t0.task_id
> {code}
> {code}
> SELECT DISTINCT task_id FROM host_role_command WHERE ((role = @P0) AND
> (status = @P1)) ORDER BY task_id
> {code}
> {code}
> SELECT COUNT(task_id) FROM host_role_command WHERE (status IN
> (@P0,@P1,@P2,@P3,@P4,@P5))
> {code}
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