[
https://issues.apache.org/jira/browse/ZOOKEEPER-4813?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Yan Zhao updated ZOOKEEPER-4813:
--------------------------------
Description:
When the zookeeper restarts, it will restore the data from the last valid
snapshot file, and replay txn log to append data.
But if the last log file is empty due to some reason, the restore will fail,
not make the zookeeper can not restart.
The logs as followings:
{noformat}
14:12:16.023 [main] INFO org.apache.zookeeper.server.persistence.SnapStream -
Invalid snapshot snapshot.188700025d87. len = 761554294, byte = 45
14:12:16.024 [main] INFO org.apache.zookeeper.server.persistence.FileSnap -
Reading snapshot /pulsar/data/zookeeper/version-2/snapshot.188700025a05
14:12:17.350 [main] INFO org.apache.zookeeper.server.DataTree - The digest in
the snapshot has digest version of 2, with zxid as 0x188700025b07, and digest
value as 510776662607117
14:12:17.492 [main] ERROR org.apache.zookeeper.server.quorum.QuorumPeer -
Unable to load database on disk
java.io.EOFException: null
at java.io.DataInputStream.readInt(DataInputStream.java:386) ~[?:?]
at
org.apache.jute.BinaryInputArchive.readInt(BinaryInputArchive.java:96)
~[org.apache.zookeeper-zookeeper-jute-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileHeader.deserialize(FileHeader.java:67)
~[org.apache.zookeeper-zookeeper-jute-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.inStreamCreated(FileTxnLog.java:725)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.createInputArchive(FileTxnLog.java:743)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.goToNextLog(FileTxnLog.java:711)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.next(FileTxnLog.java:792)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnSnapLog.fastForwardFromEdits(FileTxnSnapLog.java:361)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnSnapLog.lambda$restore$0(FileTxnSnapLog.java:267)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:312)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:288)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1149)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:1135)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:229)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:137)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:91)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
14:12:17.502 [main] INFO
org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider - Shutdown
executor service with timeout 1000
14:12:17.508 [main] INFO org.eclipse.jetty.server.AbstractConnector - Stopped
ServerConnector@2484f433{HTTP/1.1, (http/1.1)}{0.0.0.0:8000}
14:12:17.510 [main] INFO org.eclipse.jetty.server.handler.ContextHandler -
Stopped o.e.j.s.ServletContextHandler@59a67c3a{/,null,STOPPED}
14:12:17.515 [main] ERROR org.apache.zookeeper.server.quorum.QuorumPeerMain -
Unexpected exception, exiting abnormally
java.lang.RuntimeException: Unable to run quorum server
at
org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1204)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:1135)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:229)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:137)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:91)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
Caused by: java.io.EOFException
at java.io.DataInputStream.readInt(DataInputStream.java:386) ~[?:?]
at
org.apache.jute.BinaryInputArchive.readInt(BinaryInputArchive.java:96)
~[org.apache.zookeeper-zookeeper-jute-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileHeader.deserialize(FileHeader.java:67)
~[org.apache.zookeeper-zookeeper-jute-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.inStreamCreated(FileTxnLog.java:725)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.createInputArchive(FileTxnLog.java:743)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.goToNextLog(FileTxnLog.java:711)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.next(FileTxnLog.java:792)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnSnapLog.fastForwardFromEdits(FileTxnSnapLog.java:361)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnSnapLog.lambda$restore$0(FileTxnSnapLog.java:267)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:312)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:288)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1149)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
... 4 more
{noformat}
In fact, if the last log file open failed, we can ignore the log file.
was:
When the zookeeper restarts, it will restore the data from the last valid
snapshot file, and replay txn log to append data.
But if the last log file is empty due to some reason, the restore will fail,
not make the zookeeper can not restart.
{noformat}
14:12:16.023 [main] INFO org.apache.zookeeper.server.persistence.SnapStream -
Invalid snapshot snapshot.188700025d87. len = 761554294, byte = 45
14:12:16.024 [main] INFO org.apache.zookeeper.server.persistence.FileSnap -
Reading snapshot /pulsar/data/zookeeper/version-2/snapshot.188700025a05
14:12:17.350 [main] INFO org.apache.zookeeper.server.DataTree - The digest in
the snapshot has digest version of 2, with zxid as 0x188700025b07, and digest
value as 510776662607117
14:12:17.492 [main] ERROR org.apache.zookeeper.server.quorum.QuorumPeer -
Unable to load database on disk
java.io.EOFException: null
at java.io.DataInputStream.readInt(DataInputStream.java:386) ~[?:?]
at
org.apache.jute.BinaryInputArchive.readInt(BinaryInputArchive.java:96)
~[org.apache.zookeeper-zookeeper-jute-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileHeader.deserialize(FileHeader.java:67)
~[org.apache.zookeeper-zookeeper-jute-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.inStreamCreated(FileTxnLog.java:725)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.createInputArchive(FileTxnLog.java:743)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.goToNextLog(FileTxnLog.java:711)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.next(FileTxnLog.java:792)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnSnapLog.fastForwardFromEdits(FileTxnSnapLog.java:361)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnSnapLog.lambda$restore$0(FileTxnSnapLog.java:267)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:312)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:288)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1149)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:1135)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:229)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:137)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:91)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
14:12:17.502 [main] INFO
org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider - Shutdown
executor service with timeout 1000
14:12:17.508 [main] INFO org.eclipse.jetty.server.AbstractConnector - Stopped
ServerConnector@2484f433{HTTP/1.1, (http/1.1)}{0.0.0.0:8000}
14:12:17.510 [main] INFO org.eclipse.jetty.server.handler.ContextHandler -
Stopped o.e.j.s.ServletContextHandler@59a67c3a{/,null,STOPPED}
14:12:17.515 [main] ERROR org.apache.zookeeper.server.quorum.QuorumPeerMain -
Unexpected exception, exiting abnormally
java.lang.RuntimeException: Unable to run quorum server
at
org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1204)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:1135)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:229)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:137)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:91)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
Caused by: java.io.EOFException
at java.io.DataInputStream.readInt(DataInputStream.java:386) ~[?:?]
at
org.apache.jute.BinaryInputArchive.readInt(BinaryInputArchive.java:96)
~[org.apache.zookeeper-zookeeper-jute-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileHeader.deserialize(FileHeader.java:67)
~[org.apache.zookeeper-zookeeper-jute-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.inStreamCreated(FileTxnLog.java:725)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.createInputArchive(FileTxnLog.java:743)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.goToNextLog(FileTxnLog.java:711)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.next(FileTxnLog.java:792)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnSnapLog.fastForwardFromEdits(FileTxnSnapLog.java:361)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnSnapLog.lambda$restore$0(FileTxnSnapLog.java:267)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:312)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:288)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
at
org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1149)
~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
... 4 more
{noformat}
> Make zookeeper start successfully when the last log file is dirty during the
> restore progress
> ---------------------------------------------------------------------------------------------
>
> Key: ZOOKEEPER-4813
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4813
> Project: ZooKeeper
> Issue Type: Improvement
> Components: server
> Affects Versions: 3.9.1
> Reporter: Yan Zhao
> Assignee: Yan Zhao
> Priority: Major
> Fix For: 3.9.2
>
>
> When the zookeeper restarts, it will restore the data from the last valid
> snapshot file, and replay txn log to append data.
> But if the last log file is empty due to some reason, the restore will fail,
> not make the zookeeper can not restart.
> The logs as followings:
> {noformat}
> 14:12:16.023 [main] INFO org.apache.zookeeper.server.persistence.SnapStream
> - Invalid snapshot snapshot.188700025d87. len = 761554294, byte = 45
> 14:12:16.024 [main] INFO org.apache.zookeeper.server.persistence.FileSnap -
> Reading snapshot /pulsar/data/zookeeper/version-2/snapshot.188700025a05
> 14:12:17.350 [main] INFO org.apache.zookeeper.server.DataTree - The digest
> in the snapshot has digest version of 2, with zxid as 0x188700025b07, and
> digest value as 510776662607117
> 14:12:17.492 [main] ERROR org.apache.zookeeper.server.quorum.QuorumPeer -
> Unable to load database on disk
> java.io.EOFException: null
> at java.io.DataInputStream.readInt(DataInputStream.java:386) ~[?:?]
> at
> org.apache.jute.BinaryInputArchive.readInt(BinaryInputArchive.java:96)
> ~[org.apache.zookeeper-zookeeper-jute-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileHeader.deserialize(FileHeader.java:67)
> ~[org.apache.zookeeper-zookeeper-jute-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.inStreamCreated(FileTxnLog.java:725)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.createInputArchive(FileTxnLog.java:743)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.goToNextLog(FileTxnLog.java:711)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.next(FileTxnLog.java:792)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnSnapLog.fastForwardFromEdits(FileTxnSnapLog.java:361)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnSnapLog.lambda$restore$0(FileTxnSnapLog.java:267)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:312)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:288)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1149)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:1135)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:229)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:137)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:91)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> 14:12:17.502 [main] INFO
> org.apache.zookeeper.metrics.prometheus.PrometheusMetricsProvider - Shutdown
> executor service with timeout 1000
> 14:12:17.508 [main] INFO org.eclipse.jetty.server.AbstractConnector -
> Stopped ServerConnector@2484f433{HTTP/1.1, (http/1.1)}{0.0.0.0:8000}
> 14:12:17.510 [main] INFO org.eclipse.jetty.server.handler.ContextHandler -
> Stopped o.e.j.s.ServletContextHandler@59a67c3a{/,null,STOPPED}
> 14:12:17.515 [main] ERROR org.apache.zookeeper.server.quorum.QuorumPeerMain -
> Unexpected exception, exiting abnormally
> java.lang.RuntimeException: Unable to run quorum server
> at
> org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1204)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:1135)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:229)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:137)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:91)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> Caused by: java.io.EOFException
> at java.io.DataInputStream.readInt(DataInputStream.java:386) ~[?:?]
> at
> org.apache.jute.BinaryInputArchive.readInt(BinaryInputArchive.java:96)
> ~[org.apache.zookeeper-zookeeper-jute-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileHeader.deserialize(FileHeader.java:67)
> ~[org.apache.zookeeper-zookeeper-jute-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.inStreamCreated(FileTxnLog.java:725)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.createInputArchive(FileTxnLog.java:743)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.goToNextLog(FileTxnLog.java:711)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnLog$FileTxnIterator.next(FileTxnLog.java:792)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnSnapLog.fastForwardFromEdits(FileTxnSnapLog.java:361)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnSnapLog.lambda$restore$0(FileTxnSnapLog.java:267)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.persistence.FileTxnSnapLog.restore(FileTxnSnapLog.java:312)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.ZKDatabase.loadDataBase(ZKDatabase.java:288)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> at
> org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1149)
> ~[org.apache.zookeeper-zookeeper-3.9.1.jar:3.9.1]
> ... 4 more
> {noformat}
>
> In fact, if the last log file open failed, we can ignore the log file.
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