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Greenplum Hangs with Large Workload on Red Hat Enterprise Linux (RHEL) 7.x and CentOS 7.x

Environment

  • Pivotal Greenplum Database (GPDB) 4.3.x
  • Operating System (OS)- Red Hat Enterprise Linux (RHEL) 7.x and CentOS 7.x

Symptom

When running Greenplum Database 4.3.7.x or 4.3.8.x on any release of Red Hat Enterprise Linux 7 or CentOS 7, large workloads might hang in the workload.

Error Message

Current GPDB 4.3.8.x release notes have the following warnings:

Warning: When running Greenplum Database 4.3.7.x or 4.3.8.x on any release of Red Hat Enterprise Linux 7 or CentOS 7, large workloads might hang in the workload. This is caused by these kernel bugs referenced by Red Hat.

  • Bug 1238749 - Backport rhashtable changes from upstream
  • Bug 1316093 - Backport of da314c9923fe and 1f770c0a09 into RHEL-7

It is advised not to run Greenplum Database on RHEL 7 or CentOS 7 until the bugs are resolved and patched. Alternatively, a customer can contact Red Hat directly and request a fix before a kernel patch is released. Red Hat might, at its discretion, supply a kernel hotfix that includes fixes for bugs. "

Cause 

This is caused by an RHEL7 Kernel bug.

Resolution

The fix will be incorporated into the future general release of RHEL7.

In case customers want to have hotfix before the next formal maintenance release of RHEL, they can contact RedHat and request the hotfix. For customers information, following hotfix has been tested and proved to solve the reported issue - kernel-3.10.0-327.27.1.el7.x86_64.tar.bz2

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