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Hadoop QA commented on MAPREDUCE-7057: -------------------------------------- | (/) *{color:green}+1 overall{color}* | \\ \\ || Vote || Subsystem || Runtime || Comment || | {color:blue}0{color} | {color:blue} reexec {color} | {color:blue} 0m 15s{color} | {color:blue} Docker mode activated. {color} | || || || || {color:brown} Prechecks {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:brown} trunk Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 15m 53s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 28s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} checkstyle {color} | {color:green} 0m 21s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 33s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 10m 31s{color} | {color:green} branch has no errors when building and testing our client artifacts. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 47s{color} | {color:green} trunk passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 25s{color} | {color:green} trunk passed {color} | || || || || {color:brown} Patch Compile Tests {color} || | {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 0m 29s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} compile {color} | {color:green} 0m 24s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javac {color} | {color:green} 0m 24s{color} | {color:green} the patch passed {color} | | {color:orange}-0{color} | {color:orange} checkstyle {color} | {color:orange} 0m 16s{color} | {color:orange} hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core: The patch generated 2 new + 22 unchanged - 8 fixed = 24 total (was 30) {color} | | {color:green}+1{color} | {color:green} mvnsite {color} | {color:green} 0m 28s{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} shadedclient {color} | {color:green} 10m 46s{color} | {color:green} patch has no errors when building and testing our client artifacts. {color} | | {color:green}+1{color} | {color:green} findbugs {color} | {color:green} 0m 56s{color} | {color:green} the patch passed {color} | | {color:green}+1{color} | {color:green} javadoc {color} | {color:green} 0m 22s{color} | {color:green} the patch passed {color} | || || || || {color:brown} Other Tests {color} || | {color:green}+1{color} | {color:green} unit {color} | {color:green} 3m 50s{color} | {color:green} hadoop-mapreduce-client-core 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} 47m 8s{color} | {color:black} {color} | \\ \\ || Subsystem || Report/Notes || | Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:5b98639 | | JIRA Issue | MAPREDUCE-7057 | | JIRA Patch URL | https://issues.apache.org/jira/secure/attachment/12911306/MAPREDUCE-7057.2.patch | | Optional Tests | asflicense compile javac javadoc mvninstall mvnsite unit shadedclient findbugs checkstyle | | uname | Linux fa6dd98b752c 4.4.0-43-generic #63-Ubuntu SMP Wed Oct 12 13:48:03 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux | | Build tool | maven | | Personality | /testptch/patchprocess/precommit/personality/provided.sh | | git revision | trunk / 6f81cc0 | | maven | version: Apache Maven 3.3.9 | | Default Java | 1.8.0_151 | | findbugs | v3.1.0-RC1 | | checkstyle | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7347/artifact/out/diff-checkstyle-hadoop-mapreduce-project_hadoop-mapreduce-client_hadoop-mapreduce-client-core.txt | | Test Results | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7347/testReport/ | | Max. process+thread count | 441 (vs. ulimit of 5500) | | modules | C: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core U: hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core | | Console output | https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/7347/console | | Powered by | Apache Yetus 0.8.0-SNAPSHOT http://yetus.apache.org | This message was automatically generated. > MergeThread Review > ------------------ > > Key: MAPREDUCE-7057 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-7057 > Project: Hadoop Map/Reduce > Issue Type: Improvement > Components: mrv2 > Affects Versions: 3.0.0 > Reporter: BELUGA BEHR > Priority: Minor > Attachments: MAPREDUCE-7057.1.patch, MAPREDUCE-7057.2.patch > > > Source: > > [MergeThread.java|https://github.com/apache/hadoop/blob/178751ed8c9d47038acf8616c226f1f52e884feb/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/task/reduce/MergeThread.java] > Update this class to use Java 1.8 concurrent package. There also some > corner-cases not being addressed with the current implementation: > {code:java|title=MergeThread.java} > // There is a scenario here where N threads have submitted inputs and are all > waiting for the 'pendingToBeMerged' object. At this point, imagine the > 'close' method is called. The close method will run, see nothing in the > queue, interrupt the processing thread, and cause it to exit. Afterwards, > the 'startMerge' threads will all be triggered and add the inputs to a queue > for which there is no consumer. At this point, the T items have been removed > from the inputs with no way to recover them. In practice, this may not ever > be the case, but it can be tightened up. > public void startMerge(Set<T> inputs) { > if (!closed) { > numPending.incrementAndGet(); > List<T> toMergeInputs = new ArrayList<T>(); > Iterator<T> iter=inputs.iterator(); > for (int ctr = 0; iter.hasNext() && ctr < mergeFactor; ++ctr) { > toMergeInputs.add(iter.next()); > iter.remove(); > } > LOG.info(getName() + ": Starting merge with " + toMergeInputs.size() + > " segments, while ignoring " + inputs.size() + " segments"); > synchronized(pendingToBeMerged) { > pendingToBeMerged.addLast(toMergeInputs); > pendingToBeMerged.notifyAll(); > } > } > } > public synchronized void close() throws InterruptedException { > closed = true; > waitForMerge(); > interrupt(); > } > {code} -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: mapreduce-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: mapreduce-issues-h...@hadoop.apache.org