hadoop 报错 there appears to be a gap in the edit log. we expected txitd 1, but got txid 14444

hadoop 报错 there appears to be a gap in the edit log.  we expected txitd 1, but got txid 14444

原因：

    namenode元数据被破坏，需要修复

解决：

    恢复一下namenode

    hadoop namenode –recover

    选择Y

    选择c

ok!

我也是醉了！！

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You have selected metadata recovery mode. This mode is intended to recover lost matdata on a corrupt filesystem. metadata recovery mode often permanently deletes data from your HDFS filesystem.