Wednesday, February 17, 2016

How to enable MapRFS client debug in Drill


This article explains how to enable MapRFS client debug in Drill so that Drill can print much more verbose logs in drillbit.out.


1. Put below entry into $DRILL_HOME/conf/core-site.xml on all drillbit nodes.

For example, if it is Drill 1.4 on MapR, then the location is:

2. Restart all drillbits.

3. Check the debug logs in drillbit.out

For example, if we create a table in Drill, below information may show up:
DEBUG Client fs/client/fileclient/cc/ Thread:
DEBUG Cidcache fs/client/fileclient/cc/
DEBUG JniCommon fs/client/fileclient/cc/

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