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From Jinho Kim <jh...@apache.org>
Subject Re: Some Tajo-0.9.0 questions
Date Sat, 17 Jan 2015 15:00:23 GMT
 Thank you for your sharing

Can you enable the dfs.datanode.hdfs-blocks-metadata.enabled in
hdfs-site.xml ?
If you enable the block-metadata, tajo-cluster can use the volume load
balancing. You should restart the datanode and tajo cluster. I will
investigate performance of count-distinct operator. and You can change to
“select count(a.auid) from ( select auid from test_pl_00_0 ) a”


-Jinho
Best regards

2015-01-16 18:05 GMT+09:00 Azuryy Yu <azuryyyu@gmail.com>:

> default> select count(*) from test_pl_00_0;
> Progress: 0%, response time: 0.718 sec
> Progress: 0%, response time: 0.72 sec
> Progress: 0%, response time: 1.121 sec
> Progress: 12%, response time: 1.923 sec
> Progress: 28%, response time: 2.925 sec
> Progress: 41%, response time: 3.927 sec
> Progress: 50%, response time: 4.931 sec
> Progress: 100%, response time: 5.323 sec
> 2015-01-16T17:04:41.116+0800: [GC2015-01-16T17:04:41.116+0800: [ParNew:
> 26543K->6211K(31488K), 0.0079770 secs] 26543K->6211K(115456K), 0.0080700
> secs] [Times: user=0.02 sys=0.00, real=0.01 secs]
> 2015-01-16T17:04:41.303+0800: [GC2015-01-16T17:04:41.303+0800: [ParNew:
> 27203K->7185K(31488K), 0.0066950 secs] 27203K->7185K(115456K), 0.0068130
> secs] [Times: user=0.02 sys=0.00, real=0.01 secs]
> 2015-01-16T17:04:41.504+0800: [GC2015-01-16T17:04:41.504+0800: [ParNew:
> 28177K->5597K(31488K), 0.0091630 secs] 28177K->6523K(115456K), 0.0092430
> secs] [Times: user=0.02 sys=0.00, real=0.01 secs]
> 2015-01-16T17:04:41.778+0800: [GC2015-01-16T17:04:41.778+0800: [ParNew:
> 26589K->6837K(31488K), 0.0067280 secs] 27515K->7764K(115456K), 0.0068160
> secs] [Times: user=0.02 sys=0.00, real=0.01 secs]
> ?count
> -------------------------------
> 4487999
> (1 rows, 5.323 sec, 8 B selected)
>
> On Fri, Jan 16, 2015 at 5:03 PM, Azuryy Yu <azuryyyu@gmail.com> wrote:
>
> > Hi,
> > There is no big improvement, sometimes more slower than before. I also
> try
> > to increase worker's heap size and parallel, nothing improve.
> >
> > default> select count(distinct auid) from test_pl_00_0;
> > Progress: 0%, response time: 0.963 sec
> > Progress: 0%, response time: 0.964 sec
> > Progress: 0%, response time: 1.366 sec
> > Progress: 0%, response time: 2.168 sec
> > Progress: 0%, response time: 3.17 sec
> > Progress: 0%, response time: 4.172 sec
> > Progress: 16%, response time: 5.174 sec
> > Progress: 16%, response time: 6.176 sec
> > Progress: 16%, response time: 7.178 sec
> > Progress: 33%, response time: 8.18 sec
> > Progress: 50%, response time: 9.181 sec
> > Progress: 50%, response time: 10.183 sec
> > Progress: 50%, response time: 11.185 sec
> > Progress: 50%, response time: 12.187 sec
> > Progress: 66%, response time: 13.189 sec
> > Progress: 66%, response time: 14.19 sec
> > Progress: 100%, response time: 15.003 sec
> > 2015-01-16T17:00:56.410+0800: [GC2015-01-16T17:00:56.410+0800: [ParNew:
> > 26473K->6582K(31488K), 0.0105030 secs] 26473K->6582K(115456K), 0.0105720
> > secs] [Times: user=0.04 sys=0.00, real=0.01 secs]
> > 2015-01-16T17:00:56.593+0800: [GC2015-01-16T17:00:56.593+0800: [ParNew:
> > 27574K->6469K(31488K), 0.0086300 secs] 27574K->6469K(115456K), 0.0086940
> > secs] [Times: user=0.02 sys=0.00, real=0.01 secs]
> > 2015-01-16T17:00:56.800+0800: [GC2015-01-16T17:00:56.800+0800: [ParNew:
> > 27461K->5664K(31488K), 0.0122560 secs] 27461K->6591K(115456K), 0.0123210
> > secs] [Times: user=0.02 sys=0.01, real=0.01 secs]
> > 2015-01-16T17:00:57.065+0800: [GC2015-01-16T17:00:57.065+0800: [ParNew:
> > 26656K->6906K(31488K), 0.0070520 secs] 27583K->7833K(115456K), 0.0071470
> > secs] [Times: user=0.03 sys=0.00, real=0.01 secs]
> > ?count
> > -------------------------------
> > 1222356
> > (1 rows, 15.003 sec, 8 B selected)
> >
> >
> > On Fri, Jan 16, 2015 at 4:09 PM, Azuryy Yu <azuryyyu@gmail.com> wrote:
> >
> >> Thanks Kim, I'll try and post back.
> >>
> >> On Fri, Jan 16, 2015 at 4:02 PM, Jinho Kim <jhkim@apache.org> wrote:
> >>
> >>> Thanks Azuryy Yu
> >>>
> >>> Your parallel running tasks of tajo-worker is 10 but heap memory is
> 3GB.
> >>> It
> >>> cause a long JVM pause
> >>> I recommend following :
> >>>
> >>> tajo-env.sh
> >>> TAJO_WORKER_HEAPSIZE=3000 or more
> >>>
> >>> tajo-site.xml
> >>> <!--  worker  -->
> >>> <property>
> >>>   <name>tajo.worker.resource.memory-mb</name>
> >>>   <value>3512</value> <!--  3 tasks + 1 qm task  -->
> >>> </property>
> >>> <property>
> >>>   <name>tajo.task.memory-slot-mb.default</name>
> >>>   <value>1000</value> <!--  default 512 -->
> >>> </property>
> >>> <property>
> >>>    <name>tajo.worker.resource.dfs-dir-aware</name>
> >>>    <value>true</value>
> >>> </property>
> >>> <!--  end  -->
> >>>
> http://tajo.apache.org/docs/0.9.0/configuration/worker_configuration.html
> >>>
> >>> -Jinho
> >>> Best regards
> >>>
> >>> 2015-01-16 16:02 GMT+09:00 Azuryy Yu <azuryyyu@gmail.com>:
> >>>
> >>> > Thanks Kim.
> >>> >
> >>> > The following is my tajo-env and tajo-site
> >>> >
> >>> > *tajo-env.sh:*
> >>> > export HADOOP_HOME=/usr/local/hadoop
> >>> > export JAVA_HOME=/usr/local/java
> >>> > _TAJO_OPTS="-server -verbose:gc
> >>> >   -XX:+PrintGCDateStamps
> >>> >   -XX:+PrintGCDetails
> >>> >   -XX:+UseGCLogFileRotation
> >>> >   -XX:NumberOfGCLogFiles=9
> >>> >   -XX:GCLogFileSize=256m
> >>> >   -XX:+DisableExplicitGC
> >>> >   -XX:+UseCompressedOops
> >>> >   -XX:SoftRefLRUPolicyMSPerMB=0
> >>> >   -XX:+UseFastAccessorMethods
> >>> >   -XX:+UseParNewGC
> >>> >   -XX:+UseConcMarkSweepGC
> >>> >   -XX:+CMSParallelRemarkEnabled
> >>> >   -XX:CMSInitiatingOccupancyFraction=70
> >>> >   -XX:+UseCMSCompactAtFullCollection
> >>> >   -XX:CMSFullGCsBeforeCompaction=0
> >>> >   -XX:+CMSClassUnloadingEnabled
> >>> >   -XX:CMSMaxAbortablePrecleanTime=300
> >>> >   -XX:+CMSScavengeBeforeRemark
> >>> >   -XX:PermSize=160m
> >>> >   -XX:GCTimeRatio=19
> >>> >   -XX:SurvivorRatio=2
> >>> >   -XX:MaxTenuringThreshold=60"
> >>> > _TAJO_MASTER_OPTS="$_TAJO_OPTS -Xmx512m -Xms512m -Xmn256m"
> >>> > _TAJO_WORKER_OPTS="$_TAJO_OPTS -Xmx3g -Xms3g -Xmn1g"
> >>> > _TAJO_QUERYMASTER_OPTS="$_TAJO_OPTS -Xmx512m -Xms512m -Xmn256m"
> >>> > export TAJO_OPTS=$_TAJO_OPTS
> >>> > export TAJO_MASTER_OPTS=$_TAJO_MASTER_OPTS
> >>> > export TAJO_WORKER_OPTS=$_TAJO_WORKER_OPTS
> >>> > export TAJO_QUERYMASTER_OPTS=$_TAJO_QUERYMASTER_OPTS
> >>> > export TAJO_LOG_DIR=${TAJO_HOME}/logs
> >>> > export TAJO_PID_DIR=${TAJO_HOME}/pids
> >>> > export TAJO_WORKER_STANDBY_MODE=true
> >>> >
> >>> > *tajo-site.xml:*
> >>> >
> >>> > <configuration>
> >>> >   <property>
> >>> >     <name>tajo.rootdir</name>
> >>> >     <value>hdfs://test-cluster/tajo</value>
> >>> >   </property>
> >>> >   <property>
> >>> >     <name>tajo.master.umbilical-rpc.address</name>
> >>> >     <value>10-0-86-51:26001</value>
> >>> >   </property>
> >>> >   <property>
> >>> >     <name>tajo.master.client-rpc.address</name>
> >>> >     <value>10-0-86-51:26002</value>
> >>> >   </property>
> >>> >   <property>
> >>> >     <name>tajo.resource-tracker.rpc.address</name>
> >>> >     <value>10-0-86-51:26003</value>
> >>> >   </property>
> >>> >   <property>
> >>> >     <name>tajo.catalog.client-rpc.address</name>
> >>> >     <value>10-0-86-51:26005</value>
> >>> >   </property>
> >>> >   <property>
> >>> >     <name>tajo.worker.tmpdir.locations</name>
> >>> >     <value>/test/tajo1,/test/tajo2,/test/tajo3</value>
> >>> >   </property>
> >>> >   <!--  worker  -->
> >>> >   <property>
> >>> >     <name>tajo.worker.resource.tajo.worker.resource.cpu-cores</name>
> >>> >     <value>4</value>
> >>> >   </property>
> >>> >  <property>
> >>> >    <name>tajo.worker.resource.memory-mb</name>
> >>> >    <value>5120</value>
> >>> >  </property>
> >>> >   <property>
> >>> >     <name>tajo.worker.resource.dfs-dir-aware</name>
> >>> >     <value>true</value>
> >>> >   </property>
> >>> >   <property>
> >>> >     <name>tajo.worker.resource.dedicated</name>
> >>> >     <value>true</value>
> >>> >   </property>
> >>> >   <property>
> >>> >     <name>tajo.worker.resource.dedicated-memory-ratio</name>
> >>> >     <value>0.6</value>
> >>> >   </property>
> >>> > </configuration>
> >>> >
> >>> > On Fri, Jan 16, 2015 at 2:50 PM, Jinho Kim <jhkim@apache.org>
wrote:
> >>> >
> >>> > > Hello Azuyy yu
> >>> > >
> >>> > > I left some comments.
> >>> > >
> >>> > > -Jinho
> >>> > > Best regards
> >>> > >
> >>> > > 2015-01-16 14:37 GMT+09:00 Azuryy Yu <azuryyyu@gmail.com>:
> >>> > >
> >>> > > > Hi,
> >>> > > >
> >>> > > > I tested Tajo before half a year, then not focus on Tajo
because
> >>> some
> >>> > > other
> >>> > > > works.
> >>> > > >
> >>> > > > then I setup a small dev Tajo cluster this week.(six nodes,
VM)
> >>> based
> >>> > on
> >>> > > > Hadoop-2.6.0.
> >>> > > >
> >>> > > > so my questions is:
> >>> > > >
> >>> > > > 1) From I know half a yea ago, Tajo is work on Yarn, using
Yarn
> >>> > scheduler
> >>> > > > to manage  job resources. but now I found it doesn't rely
on
> Yarn,
> >>> > > because
> >>> > > > I only start HDFS daemons, no yarn daemons. so Tajo has his
own
> job
> >>> > > > sheduler ?
> >>> > > >
> >>> > > >
> >>> > > Now, tajo does using own task scheduler. and  You can start tajo
> >>> without
> >>> > > Yarn daemons
> >>> > > Please refer to
> http://tajo.apache.org/docs/0.9.0/configuration.html
> >>> > >
> >>> > >
> >>> > > >
> >>> > > > 2) Does that we need to put the file replications on every
nodes
> on
> >>> > Tajo
> >>> > > > cluster?
> >>> > > >
> >>> > >
> >>> > > No, tajo does not need more replication.  if you set more
> >>> replication,
> >>> > data
> >>> > > locality can be increased
> >>> > >
> >>> > > such as I have a six nodes Tajo cluster, then should I set HDFS
> block
> >>> > > > replication to six? because:
> >>> > > >
> >>> > > > I noticed when I run Tajo query, some nodes are busy, but
some is
> >>> free.
> >>> > > > because the file's blocks are only located on these nodes.
non
> >>> others.
> >>> > > >
> >>> > > >
> >>> > > In my opinion, you need to run balancer
> >>> > >
> >>> > >
> >>> >
> >>>
> http://hadoop.apache.org/docs/r2.6.0/hadoop-project-dist/hadoop-hdfs/HDFSCommands.html#balancer
> >>> > >
> >>> > >
> >>> > > 3)the test data set is 4 million rows. nearly several GB. but
it's
> >>> very
> >>> > > > slow when I runing: select count(distinct ID) from ****;
> >>> > > > Any possible problems here?
> >>> > > >
> >>> > >
> >>> > > Could you share tajo-env.sh, tajo-site.xml ?
> >>> > >
> >>> > >
> >>> > > >
> >>> > > >
> >>> > > > Thanks
> >>> > > >
> >>> > >
> >>> >
> >>>
> >>
> >>
> >
>

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