As you know I really liked what I saw and heard during the interview besides what I have found via my own research online. However coming on board as a contractor to this environment, you can understand my concern about how to meet their expectation and create a win-win-win situation. Should I have met with the management during the interview and be more clear about my initial duties and responsibilities, I would be more comfortable coming on board as a contractor. Particularly if my initial assignment is performing SDET duties, then I need to feel secure to be able to communicate freely with my management as this job is not 'ground up', and diplomacy and trust and good relationship are important to the success, not just technical. Don't you agree with me?
On Thu, Oct 31, 2013 at 3:20 PM, Jason Lowe <[email protected]> wrote: > Pinged Bobby who has access to the machines, and this is indeed what is > happening. There were two cases: > > 1) When TestUberAM times out the minicluster it is running along with its > MRAppMaster process can escape. There are a ton of threads in those > processes, so it doesn't take very many of these to leak before the process > ulimit is hit. > > 2) There were a couple of other surefire processes that had leaked but > they had no discernable state left that would identify which test it was > running other than it was something inside of mapreduce-client-jobclient > (which could still be TestUberAM). The main thread and most other > non-daemon threads were gone, but there was a lone SocketReader thread that > was still hanging around. It wasn't a daemon thread and was apparently the > only thread keeping the JVM alive. > > So we need to prioritize fixing the TestUberAM hang, currently tracked by > MAPREDUCE-5481 > <https://issues.apache.org/**jira/browse/MAPREDUCE-5481<https://issues.apache.org/jira/browse/MAPREDUCE-5481>> > and/or find a way to keep it from escaping during builds. There might be > another issue where SocketReader threads can prevent the JVM from shutting > down completely in some cases. > > Jason > > On 10/31/2013 08:19 AM, Jason Lowe wrote: > >> I don't think that OOM error below indicates it needs more heap space, as >> it's complaining about the ability to create a new native thread. That >> usually is caused by lack of available virtual address space or hitting >> process ulimits. >> >> What's most likely going on is the jenkins user is hitting a process >> ulimit. This can occur if processes have "leaked" from previous build/test >> runs and are using a large number of threads, or a large number of >> processes have leaked overall. Could someone with access to the build >> machines check if that is indeed the case? If it has, bonus points for >> indentifying the source of the leak. ;-) >> >> Thanks! >> >> Jason >> >> On 10/30/2013 05:39 PM, Roman Shaposhnik wrote: >> >>> I can take a look sometime later today. Meantime I can only >>> say that I've been running into 1Gb limit in a few builds as >>> of late. These days -- I just go with 2G by default. >>> >>> Thanks, >>> Roman. >>> >>> On Wed, Oct 30, 2013 at 3:33 PM, Alejandro Abdelnur <[email protected]> >>> wrote: >>> >>>> The following is happening in builds for MAPREDUCE and YARN patches. >>>> I've seen the failures in hadoop5 and hadoop7 machines. I've increased >>>> Maven memory to 1GB (export MAVEN_OPTS="-Xmx1024m" in the jenkins >>>> jobs) but still some failures persist: >>>> https://builds.apache.org/job/**PreCommit-MAPREDUCE-Build/**4159/<https://builds.apache.org/job/PreCommit-MAPREDUCE-Build/4159/> >>>> >>>> Does anybody has an idea of what may be going on? >>>> >>>> >>>> >>>> thx >>>> >>>> >>>> [INFO] --- native-maven-plugin:1.0-alpha-**7:javah (default) @ >>>> hadoop-common --- >>>> [INFO] /bin/sh -c cd >>>> /home/jenkins/jenkins-slave/**workspace/PreCommit-MAPREDUCE-** >>>> Build/trunk/hadoop-common-**project/hadoop-common >>>> && /home/jenkins/tools/java/**latest/bin/javah -d >>>> /home/jenkins/jenkins-slave/**workspace/PreCommit-MAPREDUCE-** >>>> Build/trunk/hadoop-common-**project/hadoop-common/target/**native/javah >>>> >>>> -classpath /home/jenkins/jenkins-slave/**workspace/PreCommit-MAPREDUCE- >>>> **Build/trunk/hadoop-common-**project/hadoop-common/target/** >>>> classes:/home/jenkins/jenkins-**slave/workspace/PreCommit-** >>>> MAPREDUCE-Build/trunk/hadoop-**common-project/hadoop-** >>>> annotations/target/classes:/**home/jenkins/tools/java/jdk1.** >>>> 6.0_26/jre/../lib/tools.jar:/**home/jenkins/.m2/repository/** >>>> com/google/guava/guava/11.0.2/**guava-11.0.2.jar:/home/** >>>> jenkins/.m2/repository/com/**google/code/findbugs/jsr305/1.** >>>> 3.9/jsr305-1.3.9.jar:/home/**jenkins/.m2/repository/** >>>> commons-cli/commons-cli/1.2/**commons-cli-1.2.jar:/home/** >>>> jenkins/.m2/repository/org/**apache/commons/commons-math/2.** >>>> 1/commons-math-2.1.jar:/home/**jenkins/.m2/repository/xmlenc/** >>>> xmlenc/0.52/xmlenc-0.52.jar:/**home/jenkins/.m2/repository/** >>>> commons-httpclient/commons-**httpclient/3.1/commons-** >>>> httpclient-3.1.jar:/home/**jenkins/.m2/repository/** >>>> commons-codec/commons-codec/1.**4/commons-codec-1.4.jar:/home/** >>>> jenkins/.m2/repository/**commons-io/commons-io/2.1/** >>>> commons-io-2.1.jar:/home/**jenkins/.m2/repository/** >>>> commons-net/commons-net/3.1/**commons-net-3.1.jar:/home/** >>>> jenkins/.m2/repository/javax/**servlet/servlet-api/2.5/** >>>> servlet-api-2.5.jar:/home/**jenkins/.m2/repository/org/** >>>> mortbay/jetty/jetty/6.1.26/**jetty-6.1.26.jar:/home/** >>>> jenkins/.m2/repository/org/**mortbay/jetty/jetty-util/6.1.** >>>> 26/jetty-util-6.1.26.jar:/**home/jenkins/.m2/repository/** >>>> com/sun/jersey/jersey-core/1.**9/jersey-core-1.9.jar:/home/** >>>> jenkins/.m2/repository/com/**sun/jersey/jersey-json/1.9/** >>>> jersey-json-1.9.jar:/home/**jenkins/.m2/repository/org/** >>>> codehaus/jettison/jettison/1.**1/jettison-1.1.jar:/home/** >>>> jenkins/.m2/repository/stax/**stax-api/1.0.1/stax-api-1.0.1.** >>>> jar:/home/jenkins/.m2/**repository/com/sun/xml/bind/** >>>> jaxb-impl/2.2.3-1/jaxb-impl-2.**2.3-1.jar:/home/jenkins/.m2/** >>>> repository/javax/xml/bind/**jaxb-api/2.2.2/jaxb-api-2.2.2.** >>>> jar:/home/jenkins/.m2/**repository/javax/activation/** >>>> activation/1.1/activation-1.1.**jar:/home/jenkins/.m2/** >>>> repository/org/codehaus/**jackson/jackson-jaxrs/1.8.8/** >>>> jackson-jaxrs-1.8.8.jar:/home/**jenkins/.m2/repository/org/** >>>> codehaus/jackson/jackson-xc/1.**8.8/jackson-xc-1.8.8.jar:/** >>>> home/jenkins/.m2/repository/**com/sun/jersey/jersey-server/** >>>> 1.9/jersey-server-1.9.jar:/**home/jenkins/.m2/repository/** >>>> asm/asm/3.2/asm-3.2.jar:/home/**jenkins/.m2/repository/** >>>> commons-logging/commons-**logging/1.1.1/commons-logging-** >>>> 1.1.1.jar:/home/jenkins/.m2/**repository/log4j/log4j/1.2.17/** >>>> log4j-1.2.17.jar:/home/**jenkins/.m2/repository/net/** >>>> java/dev/jets3t/jets3t/0.6.1/**jets3t-0.6.1.jar:/home/** >>>> jenkins/.m2/repository/**commons-lang/commons-lang/2.5/** >>>> commons-lang-2.5.jar:/home/**jenkins/.m2/repository/** >>>> commons-configuration/commons-**configuration/1.6/commons-** >>>> configuration-1.6.jar:/home/**jenkins/.m2/repository/** >>>> commons-collections/commons-**collections/3.2.1/commons-** >>>> collections-3.2.1.jar:/home/**jenkins/.m2/repository/** >>>> commons-digester/commons-**digester/1.8/commons-digester-** >>>> 1.8.jar:/home/jenkins/.m2/**repository/commons-beanutils/** >>>> commons-beanutils/1.7.0/**commons-beanutils-1.7.0.jar:/** >>>> home/jenkins/.m2/repository/**commons-beanutils/commons-** >>>> beanutils-core/1.8.0/commons-**beanutils-core-1.8.0.jar:/** >>>> home/jenkins/.m2/repository/**org/slf4j/slf4j-api/1.7.5/** >>>> slf4j-api-1.7.5.jar:/home/**jenkins/.m2/repository/org/** >>>> codehaus/jackson/jackson-core-**asl/1.8.8/jackson-core-asl-1.** >>>> 8.8.jar:/home/jenkins/.m2/**repository/org/codehaus/** >>>> jackson/jackson-mapper-asl/1.**8.8/jackson-mapper-asl-1.8.8.** >>>> jar:/home/jenkins/.m2/**repository/org/apache/avro/** >>>> avro/1.7.4/avro-1.7.4.jar:/**home/jenkins/.m2/repository/** >>>> com/thoughtworks/paranamer/**paranamer/2.3/paranamer-2.3.** >>>> jar:/home/jenkins/.m2/**repository/org/xerial/snappy/**snappy-java/ >>>> 1.0.4.1/snappy-**java-1.0.4.1.jar:/home/**jenkins/.m2/repository/com/** >>>> google/protobuf/protobuf-java/**2.5.0/protobuf-java-2.5.0.jar:** >>>> /home/jenkins/jenkins-slave/**workspace/PreCommit-MAPREDUCE-** >>>> Build/trunk/hadoop-common-**project/hadoop-auth/target/** >>>> classes:/home/jenkins/.m2/**repository/com/jcraft/jsch/0.** >>>> 1.42/jsch-0.1.42.jar:/home/**jenkins/.m2/repository/org/** >>>> apache/zookeeper/zookeeper/3.**4.5/zookeeper-3.4.5.jar:/home/** >>>> jenkins/.m2/repository/org/**apache/commons/commons-** >>>> compress/1.4.1/commons-**compress-1.4.1.jar:/home/** >>>> jenkins/.m2/repository/org/**tukaani/xz/1.0/xz-1.0.jar<http://1.0.4.1/snappy-java-1.0.4.1.jar:/home/jenkins/.m2/repository/com/google/protobuf/protobuf-java/2.5.0/protobuf-java-2.5.0.jar:/home/jenkins/jenkins-slave/workspace/PreCommit-MAPREDUCE-Build/trunk/hadoop-common-project/hadoop-auth/target/classes:/home/jenkins/.m2/repository/com/jcraft/jsch/0.1.42/jsch-0.1.42.jar:/home/jenkins/.m2/repository/org/apache/zookeeper/zookeeper/3.4.5/zookeeper-3.4.5.jar:/home/jenkins/.m2/repository/org/apache/commons/commons-compress/1.4.1/commons-compress-1.4.1.jar:/home/jenkins/.m2/repository/org/tukaani/xz/1.0/xz-1.0.jar> >>>> org.apache.hadoop.io.compress.**zlib.ZlibCompressor >>>> org.apache.hadoop.io.compress.**zlib.ZlibDecompressor >>>> org.apache.hadoop.io.compress.**bzip2.Bzip2Compressor >>>> org.apache.hadoop.io.compress.**bzip2.Bzip2Decompressor >>>> org.apache.hadoop.security.**JniBasedUnixGroupsMapping >>>> org.apache.hadoop.io.nativeio.**NativeIO >>>> org.apache.hadoop.security.**JniBasedUnixGroupsNetgroupMapp**ing >>>> org.apache.hadoop.io.compress.**snappy.SnappyCompressor >>>> org.apache.hadoop.io.compress.**snappy.SnappyDecompressor >>>> org.apache.hadoop.io.compress.**lz4.Lz4Compressor >>>> org.apache.hadoop.io.compress.**lz4.Lz4Decompressor >>>> org.apache.hadoop.util.**NativeCrc32 >>>> org.apache.hadoop.net.unix.**DomainSocket >>>> Error occurred during initialization of VM >>>> java.lang.OutOfMemoryError: unable to create new native thread >>>> >>>> >>>> >>>> -- >>>> Alejandro >>>> >>> >> >> >
