[HDFS-6591] while loop is executed tens of thousands of times in Hedged Read

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.5.0
• Component/s: hdfs-client
• Target Version/s: 2.5.0
• Hadoop Flags: Reviewed
• Assignee: Liang Xie
• Reporter: LiuLei
• Created: 23/Jun/14 04:02
• Updated: 03/Sep/14 20:34
• Resolved: 30/Jun/14 20:59

Description

I download hadoop-2.4.1-rc1 code from http://people.apache.org/~acmurthy/hadoop-2.4.1-rc1/, I test the Hedged Read. I find the while loop in hedgedFetchBlockByteRange method is executed tens of thousands of times.

Issue Links

• is related to: HDFS-6631 TestPread#testHedgedReadLoopTooManyTimes fails intermittently.