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https://issues.apache.org/jira/browse/HAWQ-1458?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16002291#comment-16002291
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Paul Guo commented on HAWQ-1458:
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I'd suggest providing more details. Just a stack seems to be too simple for a
lot of people do not have the background of this issue.
> Shared Input Scan QE hung in shareinput_reader_waitready().
> -----------------------------------------------------------
>
> Key: HAWQ-1458
> URL: https://issues.apache.org/jira/browse/HAWQ-1458
> Project: Apache HAWQ
> Issue Type: Bug
> Components: Query Execution
> Reporter: Amy
> Assignee: Amy
> Fix For: backlog
>
>
> The stack is as below:
> ```
> 4/13/17 6:12:32 AM PDT: stack of postgres process (pid 108464) on test4:
> 4/13/17 6:12:32 AM PDT: Thread 2 (Thread 0x7f7ca0c7b700 (LWP 108465)):
> 4/13/17 6:12:32 AM PDT: #0 0x00000032214df283 in poll () from
> /lib64/libc.so.6
> 4/13/17 6:12:32 AM PDT: #1 0x000000000097e110 in rxThreadFunc ()
> 4/13/17 6:12:32 AM PDT: #2 0x0000003221807aa1 in start_thread () from
> /lib64/libpthread.so.0
> 4/13/17 6:12:32 AM PDT: #3 0x00000032214e8aad in clone () from
> /lib64/libc.so.6
> 4/13/17 6:12:32 AM PDT: Thread 1 (Thread 0x7f7cc5d48920 (LWP 108464)):
> 4/13/17 6:12:32 AM PDT: #0 0x00000032214e1523 in select () from
> /lib64/libc.so.6
> 4/13/17 6:12:32 AM PDT: #1 0x000000000069baaf in shareinput_reader_waitready
> ()
> 4/13/17 6:12:32 AM PDT: #2 0x000000000069be0d in
> ExecSliceDependencyShareInputScan ()
> 4/13/17 6:12:32 AM PDT: #3 0x000000000066eb40 in ExecSliceDependencyNode ()
> 4/13/17 6:12:32 AM PDT: #4 0x000000000066eaa5 in ExecSliceDependencyNode ()
> 4/13/17 6:12:32 AM PDT: #5 0x000000000066eaa5 in ExecSliceDependencyNode ()
> 4/13/17 6:12:32 AM PDT: #6 0x000000000066af41 in ExecutePlan ()
> 4/13/17 6:12:32 AM PDT: #7 0x000000000066bafa in ExecutorRun ()
> 4/13/17 6:12:32 AM PDT: #8 0x00000000007f52aa in PortalRun ()
> 4/13/17 6:12:32 AM PDT: #9 0x00000000007eb044 in exec_mpp_query ()
> 4/13/17 6:12:32 AM PDT: #10 0x00000000007effb4 in PostgresMain ()
> 4/13/17 6:12:32 AM PDT: #11 0x00000000007a04f0 in ServerLoop ()
> 4/13/17 6:12:32 AM PDT: #12 0x00000000007a32b9 in PostmasterMain ()
> 4/13/17 6:12:32 AM PDT: #13 0x00000000004a52b9 in main ()
> ```
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