[jira] [Created] (AMBARI-13066) Turn on fsync on close when HBase is installed

[Ted Yu (JIRA)]

Ted Yu created AMBARI-13066:
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             Summary: Turn on fsync on close when HBase is installed
                 Key: AMBARI-13066
                 URL: https://issues.apache.org/jira/browse/AMBARI-13066
             Project: Ambari
          Issue Type: Improvement
            Reporter: Ted Yu


The following two options should be turned on by default when HBase is 
installed:

dfs.datanode.synconclose=true - this is to avoid data loss and guarantee HDFS 
correctness. By default, HDFS does not fsync file on close.
​dfs.datanode.sync.behind.writes=true - sync partial blocks to disk, always 
*must* when sync-on-close is on for performance.

Thanks to [~arpitagarwal] for confirmation




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