[MAPREDUCE-2980] Fetch failures and other related issues in Jetty 6.1.26

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.20.205.0, 0.23.0
• Component/s: tasktracker
• Assignee: Unassigned
• Reporter: Todd Lipcon
• Created: 09/Sep/11 23:42
• Updated: 24/Aug/14 07:12

Description

Since upgrading Jetty from 6.1.14 to 6.1.26 we've had a ton of HTTP-related issues, including:

• Much higher incidence of fetch failures
• A few strange file-descriptor related bugs (eg MAPREDUCE-2389)
• A few unexplained issues where long "fsck"s on the NameNode drop out halfway through with a ClosedChannelException

Stress tests with 10000Map x 10000Reduce sleep jobs reliably reproduce fetch failures at a rate of about 1 per million on a 25 node test cluster. These problems are all new since the upgrade from 6.1.14.

Issue Links

• is duplicated by: MAPREDUCE-5588 TaskTrackers get killed by JettyBugMonitor because of incredibly high cpu usage
• is related to: HADOOP-6882 Update the patch level of Jetty
• relates to: MAPREDUCE-2389 Spurious EOFExceptions reading SpillRecord index files
• relates to: HBASE-5089 NIO based REST server