Rong Tang created HADOOP-15684:
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Summary: triggerActiveLogRoll stuck on dead name node, when
ConnectTimeoutException happens.
Key: HADOOP-15684
URL: https://issues.apache.org/jira/browse/HADOOP-15684
Project: Hadoop Common
Issue Type: Bug
Components: ha
Affects Versions: 2.9.1, 2.7.5
Reporter: Rong Tang
Attachments: FixRollEditLog.patch,
hadoop--rollingUpgrade-BN2SCH070021402.log
When name node call triggerActiveLogRoll, and the cachedActiveProxy is a dead
name node, it will throws a ConnectTimeoutException, expected behavior is to
try next NN, but current logic doesn't do so, instead, it keeps trying the
dead, mistakenly take it as active.
2018-08-17 10:02:12,001 WARN [Edit log tailer]
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer: Unable to trigger a
roll of the active NN
org.apache.hadoop.net.ConnectTimeoutException: Call From
BN2SCH070021402/25.126.188.193 to BN2SCH070041016.ap.gbl:8020 failed on socket
timeout exception: org.apache.hadoop.net.ConnectTimeoutException: 20000 millis
timeout
org.apache.hadoop.hdfs.server.namenode.ha.EditLogTailer$2.doWork(EditLogTailer.java:298)
C:\Users\rotang>ping BN2SCH070041016
Pinging BN2SCH070041016 [25.126.141.79] with 32 bytes of data:
Request timed out.
Request timed out.
Request timed out.
Request timed out.
Attachment is a log file saying how it repeatedly retries a dead name node, and
a fix patch.
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