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Posted to dev@tez.apache.org by "Jonathan Eagles (JIRA)" <ji...@apache.org> on 2017/08/29 21:42:00 UTC
[jira] [Created] (TEZ-3824) MRCombiner creates new JobConf copy per
spill
Jonathan Eagles created TEZ-3824:
------------------------------------
Summary: MRCombiner creates new JobConf copy per spill
Key: TEZ-3824
URL: https://issues.apache.org/jira/browse/TEZ-3824
Project: Apache Tez
Issue Type: Bug
Reporter: Jonathan Eagles
Assignee: Jonathan Eagles
{noformat:title=scope-57(HASH_JOIN) stack trace}
"SpillThread {scope_60_" #99 daemon prio=5 os_prio=0 tid=0x00007f2128d21800 nid=0x7487 runnable [0x00007f21154c4000]
java.lang.Thread.State: RUNNABLE
at java.util.concurrent.ConcurrentHashMap.putVal(ConcurrentHashMap.java:1012)
at java.util.concurrent.ConcurrentHashMap.putAll(ConcurrentHashMap.java:1084)
at java.util.concurrent.ConcurrentHashMap.<init>(ConcurrentHashMap.java:852)
at org.apache.hadoop.conf.Configuration.<init>(Configuration.java:728)
- locked <0x00000000d1dc5240> (a org.apache.hadoop.conf.Configuration)
at org.apache.hadoop.mapred.JobConf.<init>(JobConf.java:442)
at org.apache.hadoop.mapreduce.task.JobContextImpl.<init>(JobContextImpl.java:67)
at org.apache.hadoop.mapreduce.task.TaskAttemptContextImpl.<init>(TaskAttemptContextImpl.java:49)
at org.apache.hadoop.mapreduce.task.TaskInputOutputContextImpl.<init>(TaskInputOutputContextImpl.java:54)
at org.apache.hadoop.mapreduce.task.ReduceContextImpl.<init>(ReduceContextImpl.java:95)
at org.apache.tez.mapreduce.combine.MRCombiner.createReduceContext(MRCombiner.java:237)
at org.apache.tez.mapreduce.combine.MRCombiner.runNewCombiner(MRCombiner.java:181)
at org.apache.tez.mapreduce.combine.MRCombiner.combine(MRCombiner.java:115)
at org.apache.tez.runtime.library.common.sort.impl.ExternalSorter.runCombineProcessor(ExternalSorter.java:313)
at org.apache.tez.runtime.library.common.sort.impl.dflt.DefaultSorter.spill(DefaultSorter.java:937)
at org.apache.tez.runtime.library.common.sort.impl.dflt.DefaultSorter.sortAndSpill(DefaultSorter.java:861)
at org.apache.tez.runtime.library.common.sort.impl.dflt.DefaultSorter$SpillThread.run(DefaultSorter.java:780)
{noformat}
{code:title=JobConf copy construction for tez}
public JobContextImpl(Configuration conf, JobID jobId) {
if (conf instanceof JobConf) {
this.conf = (JobConf)conf;
} else {
--->this.conf = new JobConf(conf);<----
}
this.jobId = jobId;
this.credentials = this.conf.getCredentials();
try {
this.ugi = UserGroupInformation.getCurrentUser();
} catch (IOException e) {
throw new RuntimeException(e);
}
}
{code}
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