Re: Block missing due to power failure

[Ayush Saxena]

The file was in progress? In that case this is possible, once the data gets persisted on the disk of the datanode then the data loss ain’t possible. If someone did a hflush and not hsync while writing and the power loss happens immediately after that, so in that case also I feel there is a possibility that data might get lost post restart. Rest if the file was complete, then I don’t think in any circumstance data should get lost -Ayush On 30-Dec-2022, at 5:17 PM, hehaore...@gmail.com wrote:  Hi, A 1-replica HDFS cluster with a single DataNode. When the DataNode was restarted after power failure, it found a file with a missing block. The size of the block and mate files found in the storage path is empty, and the last modification time is the power off time. Besides the fact that the file is being written, what else could be causing this phenomenon? I wish you a happy New Year   Hao He 从 Windows 版邮件发送   --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@hadoop.apache.org For additional commands, e-mail: user-h...@hadoop.apache.org