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Tsz Wo Nicholas Sze commented on HDFS-6934: ------------------------------------------- +1 the 2.6 patch looks good. > There was a very slight merge conflict on merging to branch-2.6. ... In such case, we should cherry-pick the trunk commit and resolve the merge manually. > Move checksum computation off the hot path when writing to RAM disk > ------------------------------------------------------------------- > > Key: HDFS-6934 > URL: https://issues.apache.org/jira/browse/HDFS-6934 > Project: Hadoop HDFS > Issue Type: Sub-task > Components: datanode, hdfs-client > Reporter: Arpit Agarwal > Assignee: Chris Nauroth > Attachments: HDFS-6934-branch-2.6.5.patch, HDFS-6934.3.patch, > HDFS-6934.4.patch, HDFS-6934.5.patch, h6934_20141003b.patch, > h6934_20141005.patch > > > Since local RAM is considered reliable we can avoid writing checksums on the > hot path when replicas are being written to a local RAM disk. > The checksum can be computed by the lazy writer when moving replicas to disk. -- This message was sent by Atlassian JIRA (v6.3.4#6332)