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'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 JANUARY 10, 2020

Applies to:

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

Symptoms

NOTE: In the examples that follow, user details, cluster names, hostnames, directory paths, filenames, etc. represent a fictitious sample (and are used to provide an illustrative example only). Any similarity to actual persons, or entities, living or dead, is purely coincidental and not intended in any manner.

'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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In this Document
Symptoms
Cause
Solution
References


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