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Hadoop QA commented on HDFS-941: -------------------------------- -1 overall. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12481868/hdfs-941.txt against trunk revision 1133476. +1 @author. The patch does not contain any @author tags. +1 tests included. The patch appears to include 18 new or modified tests. +1 javadoc. The javadoc tool did not generate any warning messages. +1 javac. The applied patch does not increase the total number of javac compiler warnings. +1 findbugs. The patch does not introduce any new Findbugs (version 1.3.9) warnings. +1 release audit. The applied patch does not increase the total number of release audit warnings. -1 core tests. The patch failed these core unit tests: org.apache.hadoop.cli.TestHDFSCLI +1 contrib tests. The patch passed contrib unit tests. +1 system test framework. The patch passed system test framework compile. Test results: https://builds.apache.org/job/PreCommit-HDFS-Build/745//testReport/ Findbugs warnings: https://builds.apache.org/job/PreCommit-HDFS-Build/745//artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/745//console This message is automatically generated. > Datanode xceiver protocol should allow reuse of a connection > ------------------------------------------------------------ > > Key: HDFS-941 > URL: https://issues.apache.org/jira/browse/HDFS-941 > Project: Hadoop HDFS > Issue Type: Improvement > Components: data-node, hdfs client > Affects Versions: 0.22.0 > Reporter: Todd Lipcon > Assignee: bc Wong > Attachments: HDFS-941-1.patch, HDFS-941-2.patch, HDFS-941-3.patch, > HDFS-941-3.patch, HDFS-941-4.patch, HDFS-941-5.patch, HDFS-941-6.22.patch, > HDFS-941-6.patch, HDFS-941-6.patch, HDFS-941-6.patch, hdfs-941.txt, > hdfs-941.txt, hdfs-941.txt, hdfs941-1.png > > > Right now each connection into the datanode xceiver only processes one > operation. > In the case that an operation leaves the stream in a well-defined state (eg a > client reads to the end of a block successfully) the same connection could be > reused for a second operation. This should improve random read performance > significantly. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira