When I build a cube with nine dimensions, I get the error.
<name>mapreduce.reduce.java.opts</name>
<value>-Xmx6400m</value>
・ I think the memory should be enough<javascript:void(0);>.
2015-12-01 20:17:59,192 INFO [main]
org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl: finalMerge called
with 23 in-memory map-outputs and 14 on-disk map-outputs
2015-12-01 20:17:59,192 INFO [main]
org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl: Keeping 23 segments,
838228446 bytes in memory for intermediate, on-disk merge
2015-12-01 20:17:59,194 INFO [main]
org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl: Merging 14 files,
26641700531 bytes from disk
2015-12-01 20:17:59,194 INFO [main]
org.apache.hadoop.mapreduce.task.reduce.MergeManagerImpl: Merging 0 segments, 0
bytes from memory into reduce
2015-12-01 20:17:59,194 INFO [main] org.apache.hadoop.mapred.Merger: Merging 37
sorted segments
2015-12-01 20:17:59,199 INFO [main] org.apache.hadoop.mapred.Merger: Merging 28
intermediate segments out of a total of 37
2015-12-01 20:20:56,756 INFO [main] org.apache.hadoop.mapred.Merger: Down to
the last merge-pass, with 10 segments left of total size: 31993180203 bytes
2015-12-01 20:20:56,832 INFO [main]
org.apache.hadoop.conf.Configuration.deprecation: mapred.skip.on is deprecated.
Instead, use mapreduce.job.skiprecords
2015-12-01 20:20:56,839 INFO [main]
org.apache.kylin.job.hadoop.AbstractHadoopJob: The absolute path for meta dir
is
/data/slot0/tmp/nm-local-dir/usercache/kylin/appcache/application_1448955124847_0008/container_1448955124847_0008_01_000221/meta
2015-12-01 20:20:56,840 INFO [main] org.apache.kylin.common.KylinConfig: Use
KYLIN_CONF=/data/slot0/tmp/nm-local-dir/usercache/kylin/appcache/application_1448955124847_0008/container_1448955124847_0008_01_000221/meta
2015-12-01 20:20:56,852 INFO [main] org.apache.kylin.cube.CubeManager:
Initializing CubeManager with config
/data/slot0/tmp/nm-local-dir/usercache/kylin/filecache/18/meta
2015-12-01 20:20:56,854 INFO [main]
org.apache.kylin.common.persistence.ResourceStore: Using metadata url
/data/slot0/tmp/nm-local-dir/usercache/kylin/filecache/18/meta for resource
store
2015-12-01 20:20:57,061 INFO [main] org.apache.kylin.cube.CubeDescManager:
Initializing CubeDescManager with config
/data/slot0/tmp/nm-local-dir/usercache/kylin/filecache/18/meta
2015-12-01 20:20:57,062 INFO [main] org.apache.kylin.cube.CubeDescManager:
Reloading Cube Metadata from folder
/data/slot0/tmp/nm-local-dir/usercache/kylin/filecache/18/meta/cube_desc
2015-12-01 20:33:19,328 FATAL [main] org.apache.hadoop.mapred.YarnChild: Error
running child : java.lang.OutOfMemoryError: Java heap space
at java.util.HashMap.resize(HashMap.java:580)
at java.util.HashMap.addEntry(HashMap.java:879)
at java.util.HashMap.put(HashMap.java:505)
at java.util.HashSet.add(HashSet.java:217)
at
org.apache.kylin.job.hadoop.cube.FactDistinctColumnsReducer.reduce(FactDistinctColumnsReducer.java:74)
at
org.apache.kylin.job.hadoop.cube.FactDistinctColumnsReducer.reduce(FactDistinctColumnsReducer.java:48)
at org.apache.hadoop.mapreduce.Reducer.run(Reducer.java:171)
at
org.apache.hadoop.mapred.ReduceTask.runNewReducer(ReduceTask.java:627)
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:389)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:163)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
2015-12-01 20:33:19,335 INFO [communication thread]
org.apache.hadoop.mapred.Task: Communication exception: java.io.IOException:
The client is stopped
at org.apache.hadoop.ipc.Client.getConnection(Client.java:1500)
at org.apache.hadoop.ipc.Client.call(Client.java:1438)
at org.apache.hadoop.ipc.Client.call(Client.java:1399)
at
org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:244)
at com.sun.proxy.$Proxy7.statusUpdate(Unknown Source)
at org.apache.hadoop.mapred.Task$TaskReporter.run(Task.java:737)
at java.lang.Thread.run(Thread.java:745)
