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https://issues.apache.org/jira/browse/ZOOKEEPER-4407?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yong-Hao Zou resolved ZOOKEEPER-4407.
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Resolution: Duplicate
> Zookeeper crashes after commit fail
> -----------------------------------
>
> Key: ZOOKEEPER-4407
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4407
> Project: ZooKeeper
> Issue Type: Improvement
> Components: server
> Affects Versions: 3.7.0
> Reporter: Yong-Hao Zou
> Priority: Major
>
> I got the following Severe unrecoverable error because of a transient error
> of file write and the server exit.
> {code:java}
> 2021-11-01 10:55:41,215 [myid:4] - ERROR
> [SyncThread:4:ZooKeeperCriticalThread@49] - Severe unrecoverable error, from
> thread : SyncThread:4 java.io.IOException: Write error at
> java.base/java.io.FileOutputStream.writeBytes(Native Method) at
> java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at
> java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81)
> at
> java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142)
> at
> org.apache.zookeeper.server.persistence.FileTxnLog.commit(FileTxnLog.java:377)
> at
> org.apache.zookeeper.server.persistence.FileTxnSnapLog.commit(FileTxnSnapLog.java:599)
> at org.apache.zookeeper.server.ZKDatabase.commit(ZKDatabase.java:657)
> at
> org.apache.zookeeper.server.SyncRequestProcessor.flush(SyncRequestProcessor.java:235)
> at
> org.apache.zookeeper.server.SyncRequestProcessor.run(SyncRequestProcessor.java:169)
> {code}
> I think it is designed in
> https://issues.apache.org/jira/browse/ZOOKEEPER-2247.
> But is it a good design that the server exit because of one commit fail?
> I think it is better that we just let the commit fail or let the leader turn
> to follower, and keep the server running.
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