CDH 4.1: Error running child : java.lang.OutOfMemoryError: Java heap space
Solution 1
Ok so seems like the problem is solved. Here is my mapred-site.xml
<configuration>
<property>
<name>mapred.job.tracker</name>
<value>0.0.0.0:8021</value>
</property>
<property>
<name>mapreduce.framework.name</name>
<value>yarn</value>
</property>
<property>
<description>To set the value of tmp directory for map and reduce tasks.</description>
<name>mapreduce.task.tmp.dir</name>
<value>/var/lib/hadoop-mapreduce/cache/${user.name}/tasks</value>
</property>
<property>
<name>jobtracker.thrift.address</name>
<value>0.0.0.0:9290</value>
</property>
<property>
<name>mapred.jobtracker.plugins</name>
<value>org.apache.hadoop.thriftfs.ThriftJobTrackerPlugin</value>
<description>Comma-separated list of jobtracker plug-ins to be activated.</description>
</property>
<property>
<name>mapred.child.java.opts</name>
<value>-Xmx512m</value>
</property>
<property>
<name>io.sort.mb</name>
<value>64</value>
</property>
</configuration>
Here is my hadoop-env.sh:
export HADOOP_CLIENT_OPTS="-Xmx512m -XX:-HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=/home/cloudera/heapdump $HADOOP_CLIENT_OPTS"
I suppose the problem was in changes applying. Only restart helped me. I've tried to restart services - no effect.
Solution 2
One could also try setting the mapred.job.shuffle.input.buffer.percent
to 20%. By default, this is set to 70%, which could be a lot if you are working on a very large set of data.
Try setting this property in mapred-site.xml:
<property>
<name>mapred.job.shuffle.input.buffer.percent</name>
<value>0.20</value>
</property>
Please refer to this document for some more performance tuning: http://developer.amd.com.php53-23.ord1-1.websitetestlink.com/wordpress/media/2012/10/Hadoop_Tuning_Guide-Version5.pdf
Hope someone finds this useful :)
Capacytron
Updated on June 05, 2022Comments
-
Capacytron almost 2 years
I've trying to overcome sudden problem. Befor that problem I've used old VM. I've downloaded the new one VM and still can't make my job run. I get Java heap space error. I've alredy read this one post: out of Memory Error in Hadoop
Here is my configs from /etc/hadoop/conf:
sudo vi hadoop-env.sh
# Extra Java runtime options. Empty by default. #export HADOOP_OPTS="-Djava.net.preferIPv4Stack=true $HADOOP_CLIENT_OPTS" export HADOOP_CLIENT_OPTS="-Xmx256m $HADOOP_CLIENT_OPTS"
Here is my mapred-site.xml
<property> <name>mapred.child.java.opts</name> <value>-Xmx256m</value> </property> <property> <name>io.sort.mb</name> <value>128</value> </property>
Nothing helps :(
Here is the console output:
Deleted /var/log/hadoop-yarn/apps/cloudera/logs 12/12/02 16:31:45 INFO input.FileInputFormat: Total input paths to process : 1 12/12/02 16:31:45 INFO mapreduce.JobSubmitter: number of splits:13 12/12/02 16:31:45 WARN conf.Configuration: mapred.job.classpath.files is deprecated. Instead, use mapreduce.job.classpath.files 12/12/02 16:31:45 WARN conf.Configuration: mapred.jar is deprecated. Instead, use mapreduce.job.jar 12/12/02 16:31:45 WARN conf.Configuration: mapred.cache.files is deprecated. Instead, use mapreduce.job.cache.files 12/12/02 16:31:45 WARN conf.Configuration: mapred.output.value.class is deprecated. Instead, use mapreduce.job.output.value.class 12/12/02 16:31:45 WARN conf.Configuration: mapred.used.genericoptionsparser is deprecated. Instead, use mapreduce.client.genericoptionsparser.used 12/12/02 16:31:45 WARN conf.Configuration: mapreduce.map.class is deprecated. Instead, use mapreduce.job.map.class 12/12/02 16:31:45 WARN conf.Configuration: mapred.job.name is deprecated. Instead, use mapreduce.job.name 12/12/02 16:31:45 WARN conf.Configuration: mapreduce.reduce.class is deprecated. Instead, use mapreduce.job.reduce.class 12/12/02 16:31:45 WARN conf.Configuration: mapreduce.inputformat.class is deprecated. Instead, use mapreduce.job.inputformat.class 12/12/02 16:31:45 WARN conf.Configuration: mapred.input.dir is deprecated. Instead, use mapreduce.input.fileinputformat.inputdir 12/12/02 16:31:45 WARN conf.Configuration: mapred.output.dir is deprecated. Instead, use mapreduce.output.fileoutputformat.outputdir 12/12/02 16:31:45 WARN conf.Configuration: mapreduce.outputformat.class is deprecated. Instead, use mapreduce.job.outputformat.class 12/12/02 16:31:45 WARN conf.Configuration: mapred.map.tasks is deprecated. Instead, use mapreduce.job.maps 12/12/02 16:31:45 WARN conf.Configuration: mapred.cache.files.timestamps is deprecated. Instead, use mapreduce.job.cache.files.timestamps 12/12/02 16:31:45 WARN conf.Configuration: mapred.output.key.class is deprecated. Instead, use mapreduce.job.output.key.class 12/12/02 16:31:45 WARN conf.Configuration: mapred.working.dir is deprecated. Instead, use mapreduce.job.working.dir 12/12/02 16:31:46 INFO mapred.ResourceMgrDelegate: Submitted application application_1354455034384_0007 to ResourceManager at /0.0.0.0:8032 12/12/02 16:31:46 INFO mapreduce.Job: The url to track the job: http://localhost.localdomain:8088/proxy/application_1354455034384_0007/ 12/12/02 16:31:46 INFO mapreduce.Job: Running job: job_1354455034384_0007 12/12/02 16:31:51 INFO mapreduce.Job: Job job_1354455034384_0007 running in uber mode : false 12/12/02 16:31:51 INFO mapreduce.Job: map 0% reduce 0% 12/12/02 16:32:02 INFO mapreduce.Job: Task Id : attempt_1354455034384_0007_m_000005_0, Status : FAILED Killed by external signal 12/12/02 16:32:15 INFO mapreduce.Job: Task Id : attempt_1354455034384_0007_m_000006_0, Status : FAILED Error: Java heap space 12/12/02 16:32:19 INFO mapreduce.Job: map 1% reduce 0% 12/12/02 16:32:29 INFO mapreduce.Job: map 2% reduce 0% 12/12/02 16:32:29 INFO mapreduce.Job: Task Id : attempt_1354455034384_0007_m_000005_1, Status : FAILED Error: Java heap space 12/12/02 16:32:36 INFO mapreduce.Job: map 3% reduce 0% 12/12/02 16:32:40 INFO mapreduce.Job: Task Id : attempt_1354455034384_0007_m_000006_1, Status : FAILED Error: Java heap space 12/12/02 16:32:43 INFO mapreduce.Job: map 4% reduce 0% 12/12/02 16:32:51 INFO mapreduce.Job: Task Id : attempt_1354455034384_0007_m_000005_2, Status : FAILED Error: Java heap space 12/12/02 16:32:53 INFO mapreduce.Job: map 5% reduce 0% 12/12/02 16:33:00 INFO mapreduce.Job: map 6% reduce 0% 12/12/02 16:33:03 INFO mapreduce.Job: Task Id : attempt_1354455034384_0007_m_000006_2, Status : FAILED Error: Java heap space 12/12/02 16:33:07 INFO mapreduce.Job: map 7% reduce 0% 12/12/02 16:33:15 INFO mapreduce.Job: map 8% reduce 0% 12/12/02 16:33:15 INFO mapreduce.Job: map 15% reduce 0% 12/12/02 16:33:15 INFO mapreduce.Job: Job job_1354455034384_0007 failed with state FAILED due to: 12/12/02 16:33:15 INFO mapreduce.Job: Counters: 31 File System Counters FILE: Number of bytes read=600 FILE: Number of bytes written=349925 FILE: Number of read operations=0 FILE: Number of large read operations=0 FILE: Number of write operations=0 HDFS: Number of bytes read=105310577 HDFS: Number of bytes written=0 HDFS: Number of read operations=15 HDFS: Number of large read operations=0 HDFS: Number of write operations=0 Job Counters Failed map tasks=7 Launched map tasks=12 Other local map tasks=5 Data-local map tasks=7 Total time spent by all maps in occupied slots (ms)=597080 Total time spent by all reduces in occupied slots (ms)=0 Map-Reduce Framework Map input records=252675 Map output records=15 Map output bytes=992 Map output materialized bytes=0 Input split bytes=590 Combine input records=0 Spilled Records=0 Failed Shuffles=0 Merged Map outputs=0 GC time elapsed (ms)=272051 CPU time spent (ms)=112790 Physical memory (bytes) snapshot=1094082560 Virtual memory (bytes) snapshot=3678527488 Total committed heap usage (bytes)=780533760 File Input Format Counters Bytes Read=105938372
Here is my log:
2012-12-02 16:36:13,072 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: MapTask metrics system started 2012-12-02 16:36:14,405 INFO [main] org.apache.hadoop.mapred.YarnChild: Sleeping for 0ms before retrying again. Got null now. 2012-12-02 16:36:15,552 INFO [main] org.apache.hadoop.mapred.YarnChild: mapreduce.cluster.local.dir for child: /var/lib/hadoop-yarn/cache/yarn/nm-local-dir/usercache/cloudera/appcache/application_1354455034384_0008 2012-12-02 16:36:15,916 WARN [main] org.apache.hadoop.conf.Configuration: mapred.task.id is deprecated. Instead, use mapreduce.task.attempt.id 2012-12-02 16:36:15,919 WARN [main] org.apache.hadoop.conf.Configuration: mapred.task.is.map is deprecated. Instead, use mapreduce.task.ismap 2012-12-02 16:36:15,920 WARN [main] org.apache.hadoop.conf.Configuration: mapred.tip.id is deprecated. Instead, use mapreduce.task.id 2012-12-02 16:36:15,920 WARN [main] org.apache.hadoop.conf.Configuration: mapred.task.partition is deprecated. Instead, use mapreduce.task.partition 2012-12-02 16:36:15,921 WARN [main] org.apache.hadoop.conf.Configuration: mapred.local.dir is deprecated. Instead, use mapreduce.cluster.local.dir 2012-12-02 16:36:15,922 WARN [main] org.apache.hadoop.conf.Configuration: job.local.dir is deprecated. Instead, use mapreduce.job.local.dir 2012-12-02 16:36:15,922 WARN [main] org.apache.hadoop.conf.Configuration: mapred.cache.localFiles is deprecated. Instead, use mapreduce.job.cache.local.files 2012-12-02 16:36:15,922 WARN [main] org.apache.hadoop.conf.Configuration: mapred.job.id is deprecated. Instead, use mapreduce.job.id 2012-12-02 16:36:16,575 WARN [main] org.apache.hadoop.conf.Configuration: session.id is deprecated. Instead, use dfs.metrics.session-id 2012-12-02 16:36:18,332 INFO [main] org.apache.hadoop.mapred.Task: Using ResourceCalculatorPlugin : org.apache.hadoop.yarn.util.LinuxResourceCalculatorPlugin@3582c132 2012-12-02 16:36:21,168 FATAL [main] org.apache.hadoop.mapred.YarnChild: Error running child : java.lang.OutOfMemoryError: Java heap space at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.<init>(MapTask.java:912) at org.apache.hadoop.mapred.MapTask$NewOutputCollector.<init>(MapTask.java:638) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:709) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:332) at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:152) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1332) at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:147) 2012-12-02 16:36:21,448 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Stopping MapTask metrics system... 2012-12-02 16:36:21,448 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: MapTask metrics system stopped. 2012-12-02 16:36:21,448 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: MapTask metrics system shutdown complete. (&container_1354455034384_0008_01_000005�}stderr156WARNING: org.apache.hadoop.metrics.jvm.EventCounter is deprecated. Please use org.apache.hadoop.log.metrics.EventCounter in all the log4j.properties files. stdout0syslog35152012-12-02 16:35:31,838 WARN [main] org.apache.hadoop.metrics2.impl.MetricsConfig: Cannot locate configuration: tried hadoop-metrics2-maptask.properties,hadoop-metrics2.properties 2012-12-02 16:35:32,283 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s). 2012-12-02 16:35:32,283 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: MapTask metrics system started 2012-12-02 16:35:33,314 INFO [main] org.apache.hadoop.mapred.YarnChild: Sleeping for 0ms before retrying again. Got null now. 2012-12-02 16:35:34,339 INFO [main] org.apache.hadoop.mapred.YarnChild: mapreduce.cluster.local.dir for child: /var/lib/hadoop-yarn/cache/yarn/nm-local-dir/usercache/cloudera/appcache/application_1354455034384_0008 2
What can I try next? Please help. Thank you.