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Posted to issues@zookeeper.apache.org by "Xin Chen (Jira)" <ji...@apache.org> on 2026/03/03 11:20:00 UTC
[jira] [Updated] (ZOOKEEPER-4847) Found od in zookeeper/data/version-2/currentEpoch
[ https://issues.apache.org/jira/browse/ZOOKEEPER-4847?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Xin Chen updated ZOOKEEPER-4847:
--------------------------------
Attachment: 常用.pdf
> Found od in zookeeper/data/version-2/currentEpoch
> -------------------------------------------------
>
> Key: ZOOKEEPER-4847
> URL: https://issues.apache.org/jira/browse/ZOOKEEPER-4847
> Project: ZooKeeper
> Issue Type: Bug
> Affects Versions: 3.4.14, 3.6.4, 3.9.2
> Reporter: Xin Chen
> Priority: Major
> Attachments: 常用.pdf
>
>
> {code:java}
> 2024-07-30 16:32:48,950 [myid:1] - ERROR [main:QuorumPeer@1148] - Unable to load database on disk
> java.io.IOException: Found od in /cloud/data/zookeeper/data/version-2/currentEpoch
> at org.apache.zookeeper.server.quorum.QuorumPeer.readLongFromFile(QuorumPeer.java:2126)
> at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1100)
> at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:1079)
> at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:227)
> at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:136)
> at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:90)
> 2024-07-30 16:32:48,953 [myid:1] - ERROR [main:QuorumPeerMain@113] - Unexpected exception, exiting abnormally
> java.lang.RuntimeException: Unable to run quorum server
> at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1149)
> at org.apache.zookeeper.server.quorum.QuorumPeer.start(QuorumPeer.java:1079)
> at org.apache.zookeeper.server.quorum.QuorumPeerMain.runFromConfig(QuorumPeerMain.java:227)
> at org.apache.zookeeper.server.quorum.QuorumPeerMain.initializeAndRun(QuorumPeerMain.java:136)
> at org.apache.zookeeper.server.quorum.QuorumPeerMain.main(QuorumPeerMain.java:90)
> Caused by: java.io.IOException: Found od in /cloud/data/zookeeper/data/version-2/currentEpoch
> at org.apache.zookeeper.server.quorum.QuorumPeer.readLongFromFile(QuorumPeer.java:2126)
> at org.apache.zookeeper.server.quorum.QuorumPeer.loadDataBase(QuorumPeer.java:1100)
> ... 4 more
> 2024-07-30 16:32:48,954 [myid:1] - INFO [main:ZKAuditProvider@42] - ZooKeeper audit is disabled.
> 2024-07-30 16:32:48,955 [myid:1] - ERROR [main:ServiceUtils@48] - Exiting JVM with code 1
> {code}
> I accidentally encountered this error and found that the current Epoch file had been written with letters. Then, the zk process detected the contents of this file during restart and threw an exception before exiting the process. However, zk was unable to recover it.
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