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Haohui Mai commented on HDFS-7279: ---------------------------------- Updated the patch to address Nicholas's comments. I cleaned up the usages of LOG {{SimpleHttpProxyHandler}} in the v8 patch. I kept the LOG at INFO level when an exception occurs. My intuition is that it is usually not a serious issue when this type of error happens, thus making them WARN might generate unnecessary noise. I have no strong opinion on that, I'm okay to change it to WARN if you think it is more appropriate. > Use netty to implement DatanodeWebHdfsMethods > --------------------------------------------- > > Key: HDFS-7279 > URL: https://issues.apache.org/jira/browse/HDFS-7279 > Project: Hadoop HDFS > Issue Type: Improvement > Components: datanode, webhdfs > Reporter: Haohui Mai > Assignee: Haohui Mai > Attachments: HDFS-7279.000.patch, HDFS-7279.001.patch, > HDFS-7279.002.patch, HDFS-7279.003.patch, HDFS-7279.004.patch, > HDFS-7279.005.patch, HDFS-7279.006.patch, HDFS-7279.007.patch, > HDFS-7279.008.patch > > > Currently the DN implements all related webhdfs functionality using jetty. As > the current jetty version the DN used (jetty 6) lacks of fine-grained buffer > and connection management, DN often suffers from long latency and OOM when > its webhdfs component is under sustained heavy load. > This jira proposes to implement the webhdfs component in DN using netty, > which can be more efficient and allow more finer-grain controls on webhdfs. -- This message was sent by Atlassian JIRA (v6.3.4#6332)