'TCP: too many of orphaned sockets' Raised on BDA 4.0/CDH 5.3.0 Running Impala Jobs (Doc ID 2234986.1)

Last updated on FEBRUARY 25, 2017

Applies to:

Big Data Appliance Integrated Software - Version 4.0 to 4.5.0 [Release 4.0 to 4.5]
Linux x86-64

Symptoms

'TCP: too many of orphaned sockets' is raised on BDA 4.0/CDH 5.3 when running Impala jobs. If this happens on Node 3, Cloudera Manager becomes inaccessible.

1. When this happens, there is always a hanging impala daemon holding the resources.  Killing the daemon releases the resources and resolves the error. However the problem comes back again after a while.

2. Collecting the following impalad fd information on the node where the daemon is hanging shows the usage:

The last entry shown is what is causing the file descriptor consumption.

Cause

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