hadoop-mapreduce-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From baran cakici <barancak...@gmail.com>
Subject Configuration for small Cluster
Date Thu, 28 Apr 2011 15:21:58 GMT
Hi Everyone,

I have a Cluster with one Master(JobTracker and NameNode - Intel Core2Duo 2
GB Ram) and four Slaves(Datanode and Tasktracker - Celeron 2 GB Ram). My
Inputdata are between 2GB-10GB and I read Inputdata in MapReduce line by
line. Now, I try to accelerate my System(Benchmark), but I'm not sure, if my
Configuration is correctly. Can you please just look, if it is ok?

-mapred-site.xml

<property>
<name>mapred.job.tracker</name>
<value>apple:9001</value>
</property>

<property>
<name>mapred.child.java.opts</name>
<value>-Xmx512m -server</value>
</property>

<property>
<name>mapred.job.tracker.handler.count</name>
<value>2</value>
</property>

<property>
<name>mapred.local.dir</name>
<value>/cygwin/usr/local/hadoop-datastore/hadoop-Baran/mapred/local</value>
</property>

<property>
<name>mapred.map.tasks</name>
<value>1</value>
</property>

<property>
<name>mapred.reduce.tasks</name>
<value>4</value>
</property>

<property>
<name>mapred.submit.replication</name>
<value>2</value>
</property>

<property>
<name>mapred.system.dir</name>
<value>/cygwin/usr/local/hadoop-datastore/hadoop-Baran/mapred/system</value>
</property>

<property>
<name>mapred.tasktracker.indexcache.mb</name>
<value>10</value>
</property>

<property>
<name>mapred.tasktracker.map.tasks.maximum</name>
<value>1</value>
</property>

<property>
<name>mapred.tasktracker.reduce.tasks.maximum</name>
<value>4</value>
</property>

<property>
<name>mapred.temp.dir</name>
<value>/cygwin/usr/local/hadoop-datastore/hadoop-Baran/mapred/temp</value>
</property>

<property>
<name>webinterface.private.actions</name>
<value>true</value>
</property>

<property>
<name>mapred.reduce.slowstart.completed.maps</name>
<value>0.01</value>
</property>

-hdfs-site.xml

<property>
<name>dfs.block.size</name>
<value>268435456</value>
</property>
PS: I extended dfs.block.size, because I won 50% better performance with
this change.

I am waiting for your comments...

Regards,

Baran

Mime
View raw message