[HADOOP-9618] Add thread which detects JVM pauses

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 2.3.0
• Component/s: util
• Assignee: Todd Lipcon
• Reporter: Todd Lipcon
• Created: 04/Jun/13 17:29
• Updated: 12/May/16 18:22
• Resolved: 16/Jul/13 17:59

Description

Often times users struggle to understand what happened when a long JVM pause (GC or otherwise) causes things to malfunction inside a Hadoop daemon. For example, a long GC pause while logging an edit to the QJM may cause the edit to timeout, or a long GC pause may make other IPCs to the NameNode timeout. We should add a simple thread which loops on 1-second sleeps, and if the sleep ever takes significantly longer than 1 second, log a WARN. This will make GC pauses obvious in logs.

Issue Links

• relates to: HBASE-9630 Add thread which detects JVM pauses like HADOOP's
• relates to: MAPREDUCE-6443 Add JvmPauseMonitor to Job History Server
• relates to: YARN-4019 Add JvmPauseMonitor to ResourceManager and NodeManager
• relates to: YARN-4031 Add JvmPauseMonitor to ApplicationHistoryServer and WebAppProxyServer
• relates to: OOZIE-1826 Add thread which detects JVM pauses