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From "Jacques Nadeau (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DRILL-545) Memory leak when executing queries in serial
Date Mon, 09 Jun 2014 06:49:20 GMT

     [ https://issues.apache.org/jira/browse/DRILL-545?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jacques Nadeau updated DRILL-545:
---------------------------------

    Component/s: Execution - Flow
       Assignee: Steven Phillips

> Memory leak when executing queries in serial 
> ---------------------------------------------
>
>                 Key: DRILL-545
>                 URL: https://issues.apache.org/jira/browse/DRILL-545
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Execution - Flow
>            Reporter: Ramana Inukonda Nagaraj
>            Assignee: Steven Phillips
>
> While debugging another issue wrote a simple jdbc program to keep submitting queries
to drill using JDBC string:
> jdbc:drill:schema=dfs;zk=10.10.100.171:5181,10.10.100.172:5181,10.10.100.173:5181
> After around 400 successful queries the drillbit starts throwing exceptions and failing.

> Using sqlline to execute a query returns the same error.
> org.apache.drill.exec.memory.OutOfMemoryException: You attempted to create a new child
allocator with initial reservation 20000000 but only 9934592 bytes of memory were available.
> 	org.apache.drill.exec.memory.TopLevelAllocator.getChildAllocator(TopLevelAllocator.java:68)
~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> 	org.apache.drill.exec.ops.FragmentContext.<init>(FragmentContext.java:81) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> 	org.apache.drill.exec.work.foreman.QueryManager.runFragments(QueryManager.java:87) ~[drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> 	org.apache.drill.exec.work.foreman.Foreman.runPhysicalPlan(Foreman.java:338) [drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> 	org.apache.drill.exec.work.foreman.Foreman.runSQL(Foreman.java:366) [drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> 	org.apache.drill.exec.work.foreman.Foreman.run(Foreman.java:176) [drill-java-exec-1.0.0-m2-incubating-SNAPSHOT-rebuffed.jar:1.0.0-m2-incubating-SNAPSHOT]
> 	java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [na:1.7.0_45]
> 	java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [na:1.7.0_45]
> 	java.lang.Thread.run(Thread.java:744) [na:1.7.0_45]



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