yangzhanling created HDFS-16415:
-----------------------------------
Summary: Namenode has stoped when it wrote metadata to JournalNode
happend timeout Exception
Key: HDFS-16415
URL: https://issues.apache.org/jira/browse/HDFS-16415
Project: Hadoop HDFS
Issue Type: Improvement
Components: namanode
Affects Versions: 2.7.7
Environment: org.apache.hadoop.hdfs.qjournal.client.QuorumCall#waitFor
//when happend FULL GC spent some time ,rem < 0,so timeoutException, namenode
stoped
if (rem <= 0) {
throw new TimeoutException();
}
Reporter: yangzhanling
NameNode has stoped when it wrote metadata to JournalNode happend timeout
exception,it is ok normally, _because have been well protected with meta data
in namenode._
_But when wait the respoonse for JorunalNode, it will be Full GC as quick as a
flash and it spent a lot time,then the timeout exception has happened ,and
Namenode has stoped, so it was unstable, and unreliable._
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