Question

我在运行apache-cassandra 3.3时意外关闭了Mac OS X.在新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]

我搜索了堆栈溢出和谷歌，但没有发现同样问题的帖子。我发现问题https://issues.apache.org/jira/browse/CASSANDRA-9749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）？

感谢。

Answer 1

在Mac OS上与我当地的Cassandra一起玩时，我也遇到过这种情况。

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进行生产？

如果是，您应该知道Mac OS不受官方支持
如果不是为了生产，那么谁在乎，只需清理commitlog并重新启动

Answer 2

在Windows 7（本地计算机）环境中运行Cassandra时遇到了类似的问题。我在日志中找到的例外是

错误07:14:35在初始化期间处理提交日志时因错误而退出。 org.apache.cassandra.db.commitlog.CommitLogReplayer $ CommitLogReplayException：无法读取文件C中的提交日志描述符：\ Program Files \ DataStax-DDC \ data \ commitlog \ CommitLog-6-1470969948498.log 在org.apache.cassandra.db.commitlog.CommitLogReplayer.handleReplayError（CommitLogReplayer.java:616）[apache-cassandra-3.7.0.jar：3.7.0] 在org.apache.cassandra.db.commitlog.CommitLogReplayer.recover（CommitLogReplayer.java:378）[apache-cassandra-3.7.0.jar：3.7.0]

由于它只是一个测试设置，我删除了该特定的提交日志文件，并从Windows服务管理器重新启动它，它开始完美。我不确定如果它发生在生产环境中该怎么办。

Answer 3

我第二次在我的单节点开发人员系统上得到这个。如果jvm意外被杀，似乎能够发生。清除commitlog目录解决了它。使用Windows 10.

让我担心的是，即使没有对数据库进行更新，我也会遇到这些错误问题。 cassandra不定期冲洗。我不想因为服务器崩溃或类似问题而在生产中遇到类似这样的问题，即使我有副本节点。

在stdout日志中，最后一部分是

INFO  06:17:39 Replaying C:\Program Files\DataStax-DDC\data\commitlog\CommitLog-6-1471353812251.log, C:\Program Files\DataStax-DDC\data\commitlog\CommitLog-6-1471353812252.log, C:\Program Files\DataStax-DDC\data\commitlog\CommitLog-6-1471411951134.log, C:\Program Files\DataStax-DDC\data\commitlog\CommitLog-6-1471454506802.log, C:\Program Files\DataStax-DDC\data\commitlog\CommitLog-6-1471532812678.log
ERROR 06:17:39 Exiting due to error while processing commit log during initialization.
org.apache.cassandra.db.commitlog.CommitLogReplayer$CommitLogReplayException: Could not read commit log descriptor in file C:\Program Files\DataStax-DDC\data\commitlog\CommitLog-6-1471353812252.log
    at org.apache.cassandra.db.commitlog.CommitLogReplayer.handleReplayError(CommitLogReplayer.java:611) [apache-cassandra-3.4.0.jar:3.4.0]
    at org.apache.cassandra.db.commitlog.CommitLogReplayer.recover(CommitLogReplayer.java:373) [apache-cassandra-3.4.0.jar:3.4.0]
    at org.apache.cassandra.db.commitlog.CommitLogReplayer.recover(CommitLogReplayer.java:236) [apache-cassandra-3.4.0.jar:3.4.0]
    at org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:192) [apache-cassandra-3.4.0.jar:3.4.0]
    at org.apache.cassandra.db.commitlog.CommitLog.recover(CommitLog.java:172) [apache-cassandra-3.4.0.jar:3.4.0]
    at org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:283) [apache-cassandra-3.4.0.jar:3.4.0]
    at org.apache.cassandra.service.CassandraDaemon.activate(CassandraDaemon.java:551) [apache-cassandra-3.4.0.jar:3.4.0]
    at org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:680) [apache-cassandra-3.4.0.jar:3.4.0]

如何从Apache Cassandra CommitLogReplayException中恢复

3 个答案: