Kanaka Kumar Avvaru created HDFS-11915:
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Summary: Sync rbw dir on the first hsync() to avoid file lost on
power failure
Key: HDFS-11915
URL: https://issues.apache.org/jira/browse/HDFS-11915
Project: Hadoop HDFS
Issue Type: Bug
Reporter: Kanaka Kumar Avvaru
Priority: Critical
As discussed in HDFS-5042, there is a chance to loose blocks on power failure
if rbw file creation entry is not yet sync to device. Then the block created is
nowhere exists on disk. Neither in rbw nor in finalized.
As suggested by [~kihwal], will discuss and track it in this JIRA.
As suggested by [~vinayrpet], May be first hsync() request on block file can
call fsync on its parent directory (rbw) directory.
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