Workbench commit failed with java.lang.ArrayIndexOutOfBoundsException

Problem

MettleCI Workbench throwing java.lang.ArrayIndexOutOfBoundsException when committing asset(s)

Cause

IBM istool has a permission issue with org.eclipse.osgi

Run istool with the-preview option, and you should see problem rows in line 4 and 5

Beginning Export Preview
 [1/1] ENGINE/DEV/Jobs/sj_mrt_subject.pjb
Previewed 1 assets
<title>Invalid Configuration Location</title>Locking is not possible in the directory "/opt/IBM/InformationServer/Clients/istools/cli/configuration/org.eclipse.osgi". A common reason is that the file system or Runtime Environment does not support file locking for that location. Please choose a different location, or disable file locking passing "-Dosgi.locking=none" as a VM argument.
ReliableFile is corrupt

Solution

The solution is to change the permissions of the files that need to be locked… Assuming istool is located under /opt/IBM/InformationServer/Clients/istool

cd /opt/IBM/InformationServer/Clients/istools/cli/configuration/org.eclipse.osgi/.manager
chmod go+r .fileTable*

This will resolve the istool permission issue, and Workbench commit issue.

Note that the solution suggested in the error message (of passing "-Dosgi.locking=none" as a VM argument) does not always solve the issue without the permissions change, and with the permissions change, that argument is not needed.