[
https://issues.apache.org/jira/browse/AMBARI-9334?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14305384#comment-14305384
]
Greg Senia commented on AMBARI-9334:
------------------------------------
So does postgre allow a distinct on a lob....
ambari=> SELECT distinct t0.stage_id, t0.cluster_host_info, t0.cluster_id,
t0.log_info, t0.request_context, t0.request_id FROM stage t0, host_role_command
t1 WHERE ((t0.request_id = t1.request_id) AND t0.stage_id =t1.stage_id and
(t1.status IN ('QUEUED','IN_PROGRESS','PENDING'))) ORDER BY
t0.stage_id,t0.request_id;
stage_id |
cluster_host_info
| cluster_id | log_info
| request_context | request_id
----------+-------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------+------------+----------------
+----------------------------+------------
1 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
2 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
3 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
4 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
5 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
6 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
7 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
(7 rows)
ambari=> SELECT t0.stage_id, t0.cluster_host_info, t0.cluster_id, t0.log_info,
t0.request_context, t0.request_id FROM stage t0 WHERE t0.stage_id IN (SELECT
t1.stage_id FROM host_role_command t1 WHERE ((t0.request_id = t1.request_id)
AND (t1.status IN ('QUEUED','IN_PROGRESS','PENDING')))) ORDER BY t0.request_id,
t0.stage_id;
stage_id |
cluster_host_info
| cluster_id | log_info
| request_context | request_id
----------+-------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------------------------------------
------------------------------------------------------------------------------------------------------+------------+----------------
+----------------------------+------------
1 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
2 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
3 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
4 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
5 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
6 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
7 |
{"hs_host":["3"],"namenode_host":["5"],"snamenode_host":["3"],"zookeeper_hosts":["5-7"],"hbase_rs_hosts":["0-2","4","8"]
,"drpc_server_hosts":["7"],"supervisor_hosts":["0-2","4","8"],"ganglia_monitor_hosts":["0-8"],"rm_host":["3"],"slave_hosts":["0-2","
4","8"],"ambari_server_host":["xlab370.example.com"],"all_ping_ports":["8670:0-8"],"hive_metastore_hosts":["6"],"storm_rest_api_hosts
":["7"],"falcon_server_hosts":["5"],"hbase_master_hosts":["7"],"ganglia_server_host":["3"],"nm_hosts":["0-2","4","8"],"hive_server_h
ost":["6"],"hive_mysql_host":["6"],"all_hosts":["xlab362.example.com","xlab365.example.com","xlab366.example.com","xlab370.example.com",
"xlab364.example.com","xlab369.example.com","xlab368.example.com","xlab367.example.com","xlab363.example.com"],"oozie_server":["3"],"stor
m_ui_server_hosts":["7"],"webhcat_server_host":["6"],"nagios_server_host":["3"],"nimbus_hosts":["7"]}
| 2 | /tmp/ambari:60
| _PARSE_.START.ALL_SERVICES | 60
(7 rows)
> Ambari StageDAO.findByCommandStatuses causes Postgress HIGH CPU
> ---------------------------------------------------------------
>
> Key: AMBARI-9334
> URL: https://issues.apache.org/jira/browse/AMBARI-9334
> Project: Ambari
> Issue Type: Bug
> Components: ambari-server
> Affects Versions: 1.6.0, 1.6.1, 1.7.0
> Environment: RHEL 6.4/6.5
> postgresql-server-8.4.13-1.el6_3.x86_64
> postgresql-8.4.13-1.el6_3.x86_64
> postgresql-libs-8.4.13-1.el6_3.x86_64
> ambari-agent-1.6.1-98.x86_64
> ambari-log4j-1.6.1.98-1.noarch
> ambari-server-1.6.1-98.noarch
> Reporter: Greg Senia
> Assignee: Jonathan Hurley
> Priority: Critical
> Fix For: 2.0.0
>
> Attachments: AMBARI-9334.patch, AMBARI-9334.patch.2, Screen Shot
> 2015-01-26 at 12.18.56 PM.png, Screen Shot 2015-01-26 at 12.19.26 PM.png,
> StageDAO-1.6.1.patch, StageDAO.java
>
>
> The following code that generates a query causes postgres to use lots of CPU
> espcially if the Ambari DB grows over time. We reduced CPU by 30-40% by
> fixing the code below.
> Before:
> public List<StageEntity> findByCommandStatuses(Collection<HostRoleStatus>
> statuses) {
> TypedQuery<StageEntity> query =
> entityManagerProvider.get().createQuery("SELECT stage " +
> "FROM StageEntity stage WHERE stage.stageId IN (SELECT hrce.stageId FROM " +
> "HostRoleCommandEntity hrce WHERE stage.requestId = hrce.requestId and
> hrce.status IN ?1 ) " +
> "ORDER BY stage.requestId, stage.stageId", StageEntity.class);
> return daoUtils.selectList(query, statuses);
> }
> After:
> @RequiresSession
> public List<StageEntity> findByCommandStatuses(Collection<HostRoleStatus>
> statuses) {
> TypedQuery<StageEntity> query =
> entityManagerProvider.get().createQuery("SELECT stage "+
> "FROM StageEntity stage, HostRoleCommandEntity hrce " +
> "WHERE stage.requestId = hrce.requestId AND stage.stageId = hrce.stageId and
> hrce.status IN ?1 " +
> "ORDER BY stage.requestId, stage.stageId", StageEntity.class);
> return daoUtils.selectList(query, statuses);
> }
> Before EXPLAIN ANALYZE:
> ambari=> explain analyze SELECT t0.stage_id, t0.cluster_host_info,
> t0.cluster_id, t0.log_info, t0.request_context, t0.request_id FROM stage t0
> WHERE t0.stage_id IN (SELECT t1.stage_id FROM host_role_command t1 WHERE
> ((t0.request_id = t1.request_id) AND (t1.status IN
> ('QUEUED','IN_PROGRESS','PENDING')))) ORDER BY t0.request_id, t0.stage_id
> ;
> QUERY PLAN
>
> ------------------------------------------------------------------------------------------------------------------------------------
> Sort (cost=7407488.50..7407492.69 rows=1676 width=894) (actual
> time=55418.086..55418.086 rows=0 loops=1)
> Sort Key: t0.request_id, t0.stage_id
> Sort Method: quicksort Memory: 25kB
> -> Seq Scan on stage t0 (cost=0.00..7407398.75 rows=1676 width=894)
> (actual time=55418.081..55418.081 rows=0 loops=1)
> Filter: (SubPlan 1)
> SubPlan 1
> -> Seq Scan on host_role_command t1 (cost=0.00..4418.07 rows=1
> width=8) (actual time=16.514..16.514 rows=0 loops=3353)
> Filter: (($0 = request_id) AND ((status)::text = ANY
> ('{QUEUED,IN_PROGRESS,PENDING}'::text[])))
> Total runtime: 55418.123 ms
> (9 rows)
> After: Explain Analyze:
> ambari=> explain analyze SELECT t0.stage_id, t0.cluster_host_info,
> t0.cluster_id, t0.log_info, t0.request_context, t0.request_id FROM stage t0,
> host_role_command t1 WHERE ((t0.request_id = t1.request_id) AND t0.stage_id
> =t1.stage_id and (t1.status IN ('QUEUED','IN_PROGRESS','PENDING'))) ORDER BY
> t0.stage_id,t0.request_id
> ;
> QUERY PLAN
>
> --------------------------------------------------------------------------------------------------------------------------------
> Sort (cost=4346.51..4346.52 rows=2 width=894) (actual time=53.605..53.605
> rows=0 loops=1)
> Sort Key: t0.stage_id, t0.request_id
> Sort Method: quicksort Memory: 25kB
> -> Nested Loop (cost=0.00..4346.50 rows=2 width=894) (actual
> time=53.596..53.596 rows=0 loops=1)
> -> Seq Scan on host_role_command t1 (cost=0.00..4338.22 rows=1
> width=16) (actual time=53.595..53.595 rows=0 loops=1)
> Filter: ((status)::text = ANY
> ('{QUEUED,IN_PROGRESS,PENDING}'::text[]))
> -> Index Scan using stage_pkey on stage t0 (cost=0.00..8.27 rows=1
> width=894) (never executed)
> Index Cond: ((t0.stage_id = t1.stage_id) AND (t0.request_id =
> t1.request_id))
> Total runtime: 53.654 ms
> (9 rows)
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