如何从Apache Cassandra CommitLogReplayException中恢复

Question

运行apache-cassandra 3.3时,我意外关闭了Mac OS X. 在新的引导加载中重新启动cassandra时,出现以下错误:

INFO  15:25:15 Replaying /Users/eswenson/opt/apache-cassandra-3.5/bin/../data/commitlog/CommitLog-6-1461717351786.log, /Users/eswenson/opt/apache-cassandra-3.5/bin/../data/commitlog/CommitLog-6-1461717351787.log, /Users/eswenson/opt/apache-cassandra-3.5/bin/../data/commitlog/CommitLog-6-1461942807785.log, /Users/eswenson/opt/apache-cassandra-3.5/bin/../data/commitlog/CommitLog-6-1461943004975.log
ERROR 15:25:15 Exiting due to error while processing commit log during initialization.
org.apache.cassandra.db.commitlog.CommitLogReplayer$CommitLogReplayException: Encountered bad header at position 542295 of commit log /Users/eswenson/opt/apache-cassandra-3.5/bin/../data/commitlog/CommitLog-6-1461717351786.log, with bad position but valid CRC
        at org.apache.cassandra.db.commitlog.CommitLogReplayer.handleReplayError(CommitLogReplayer.java:611) [apache-cassandra-3.5.jar:3.5]
        at org.apache.cassandra.db.commitlog.SegmentReader$SegmentIterator.computeNext(SegmentReader.java:105) [apache-cassandra-3.5.jar:3.5]
        at org.apache.cassandra.db.commitlog.SegmentReader$SegmentIterator.computeNext(SegmentReader.java:78) [apache-cassandra-3.5.jar:3.5]
        at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143) [guava-18.0.jar:na]
        at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138) [guava-18.0.jar:na]
        at org.apache.cassandra.db.commitlog.CommitLogReplayer.recover(CommitLogReplayer.java:399) [apache-cassandra-3.5.jar:3.5]
        at org.apache.cassandra.db.commitlog.CommitLogReplayer.recover(CommitLogReplayer.java:236) [apache-cassandra-3.5.jar:3.5]
        at org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:192) [apache-cassandra-3.5.jar:3.5]
        at org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:172) [apache-cassandra-3.5.jar:3.5]
        at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:283) [apache-cassandra-3.5.jar:3.5]
        at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:551) [apache-cassandra-3.5.jar:3.5]
        at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:680) [apache-cassandra-3.5.jar:3.5]

我搜索堆栈溢出和谷歌,并没有找到相同问题的帖子.我找到了问题https://issues.apache.org/jira/browse/CASSANDRA-9749,这是相关的,但是这个问题被标记为已解决,并且与检测到问题后继续执行有关,而不是因为异常而失败.

在这种情况下我该怎么办？是否有任何恢复路径(假设没有可用的快照)？有什么方法可以在违规记录中截断提交日志？任何可用于修复错误标题的工具(例如删除记录)？

谢谢.

Answer 1

在Mac OS上与我当地的Cassandra一起玩时,我也遇到过这种异常.

如果您不关心丢失提交日志中的数据或者您在某处有备份,请停止Cassandra,清理commitlog文件夹并重新启动.

我担心没有其他选择.顺便说一句,您是否在Mac OS上部署Cassandra进行制作？

• 如果是,您应该知道Mac OS不受官方支持
• 如果不是生产那么谁在乎,只需清理commitlog并重新启动即可