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Hadoop QA commented on HDFS-10966: ---------------------------------- | (/) *{color:green}+1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 13s{color} | {color:blue} Docker mode activated. {color} | | {color:green}+1{color} | {color:green} @author {color} | {color:green} 0m 0s{color} | {color:green} The patch does not contain any @author tags. {color} | | {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m 0s{color} | {color:green} The patch appears to include 1 new or modified test files. {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 6m 52s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 44s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 34s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 52s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 12s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m 39s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 39s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 44s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 42s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 42s{color} | {color:green} the patch passed {color} | | {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange} 0m 31s{color} | {color:orange} hadoop-hdfs-project/hadoop-hdfs: The patch generated 6 new + 693 unchanged - 3 fixed = 699 total (was 696) {color} | | {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 49s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} mvneclipse {color} | {color:green} 0m 9s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} whitespace {color} | {color:green} 0m 0s{color} | {color:green} The patch has no whitespace issues. {color} | | {color:green}+1{color} | {color:green} xml {color} | {color:green} 0m 2s{color} | {color:green} The patch has no ill-formed XML file. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 1m 46s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 36s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} unit {color} | {color:green} 61m 6s{color} | {color:green} hadoop-hdfs in the patch passed. {color} | | {color:green}+1{color} | {color:green} asflicense {color} | {color:green} 0m 18s{color} | {color:green} The patch does not generate ASF License warnings. {color} | | {color:black}{color} | {color:black} {color} | {color:black} 79m 42s{color} | {color:black} {color} | \\ \\ || Subsystem || Report/Notes || | Docker | Image:yetus/hadoop:a9ad5d6 | | JIRA Issue | HDFS-10966 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12839654/HDFS-10966.01.patch | | Optional Tests | asflicense compile javac javadoc mvninstall mvnsite unit findbugs checkstyle xml | | uname | Linux 8ba1d89a341b 3.13.0-93-generic #140-Ubuntu SMP Mon Jul 18 21:21:05 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux | | Build tool | maven | | Personality | /testptch/hadoop/patchprocess/precommit/personality/provided.sh | | git revision | trunk / 7584fbf | | Default Java | 1.8.0_111 | | findbugs | v3.0.0 | | checkstyle | https://builds.apache.org/job/PreCommit-HDFS-Build/17613/artifact/patchprocess/diff-checkstyle-hadoop-hdfs-project_hadoop-hdfs.txt | | Test Results | https://builds.apache.org/job/PreCommit-HDFS-Build/17613/testReport/ | | modules | C: hadoop-hdfs-project/hadoop-hdfs U: hadoop-hdfs-project/hadoop-hdfs | | Console output | https://builds.apache.org/job/PreCommit-HDFS-Build/17613/console | | Powered by | Apache Yetus 0.4.0-SNAPSHOT http://yetus.apache.org | This message was automatically generated. > Enhance Dispatcher logic on deciding when to give up a source DataNode > ---------------------------------------------------------------------- > > Key: HDFS-10966 > URL: https://issues.apache.org/jira/browse/HDFS-10966 > Project: Hadoop HDFS > Issue Type: Bug > Components: balancer & mover > Reporter: Zhe Zhang > Assignee: Mark Wagner > Attachments: HDFS-10966.00.patch, HDFS-10966.01.patch > > > When a {{Dispatcher}} thread works on a source DataNode, in each iteration it > tries to execute a {{PendingMove}}. If no block is moved after 5 iterations, > this source (over-utlized) DataNode is given up for this Balancer iteration > (20 mins). This is problematic if the source DataNode was heavily loaded in > the beginning of the iteration. It will quickly encounter 5 unsuccessful > moves and be abandoned. > We should enhance this logic by e.g. using elapsed time instead of number of > iterations. > {code} > // Check if the previous move was successful > } else { > // source node cannot find a pending block to move, iteration +1 > noPendingMoveIteration++; > // in case no blocks can be moved for source node's task, > // jump out of while-loop after 5 iterations. > if (noPendingMoveIteration >= MAX_NO_PENDING_MOVE_ITERATIONS) { > LOG.info("Failed to find a pending move " + > noPendingMoveIteration > + " times. Skipping " + this); > resetScheduledSize(); > } > } > {code} -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org