[YARN-5096] timelinereader has a lot of logging that's not useful

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: YARN-2928
• Fix Version/s: 2.9.0, 3.0.0-alpha1
• Component/s: timelineserver
• Labels: yarn-2928-1st-milestone
• Target Version/s: YARN-2928
• Hadoop Flags: Reviewed
• Assignee: Sangjin Lee
• Reporter: Sangjin Lee
• Created: 16/May/16 23:40
• Updated: 21/Oct/17 06:05
• Resolved: 18/May/16 13:59

Description

After running about a dozen or so requests, the timelinereader log is filled with the following logging entries:

2016-05-16 15:59:13,364 INFO org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnHelper: null prefix was specified; returning all columns
2016-05-16 15:59:13,364 INFO org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnHelper: null prefix was specified; returning all columns
2016-05-16 15:59:13,364 INFO org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnHelper: null prefix was specified; returning all columns
2016-05-16 15:59:13,364 INFO org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnHelper: null prefix was specified; returning all columns
2016-05-16 15:59:13,364 INFO org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnHelper: null prefix was specified; returning all columns
2016-05-16 15:59:13,364 INFO org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnHelper: null prefix was specified; returning all columns
2016-05-16 15:59:13,364 INFO org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnHelper: null prefix was specified; returning all columns
2016-05-16 15:59:13,364 INFO org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnHelper: null prefix was specified; returning all columns
2016-05-16 15:59:13,364 INFO org.apache.hadoop.yarn.server.timelineservice.storage.common.ColumnHelper: null prefix was specified; returning all columns

There were some ~ 3,000 such logging entries. It's too excessive.