Mithun Radhakrishnan created HIVE-10213:
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Summary: MapReduce jobs using dynamic-partitioning fail on commit.
Key: HIVE-10213
URL: https://issues.apache.org/jira/browse/HIVE-10213
Project: Hive
Issue Type: Bug
Components: HCatalog
Reporter: Mithun Radhakrishnan
Assignee: Mithun Radhakrishnan
I recently ran into a problem in {{TaskCommitContextRegistry}}, when using
dynamic-partitions.
Consider a MapReduce program that reads HCatRecords from a table (using
HCatInputFormat), and then writes to another table (with identical schema),
using HCatOutputFormat. The Map-task fails with the following exception:
{code}
Error: java.io.IOException: No callback registered for
TaskAttemptID:attempt_1426589008676_509707_m_000000_0@hdfs://crystalmyth.myth.net:8020/user/mithunr/mythdb/target/_DYN0.6784154320609959/grid=__HIVE_DEFAULT_PARTITION__/dt=__HIVE_DEFAULT_PARTITION__
at
org.apache.hive.hcatalog.mapreduce.TaskCommitContextRegistry.commitTask(TaskCommitContextRegistry.java:56)
at
org.apache.hive.hcatalog.mapreduce.FileOutputCommitterContainer.commitTask(FileOutputCommitterContainer.java:139)
at org.apache.hadoop.mapred.Task.commit(Task.java:1163)
at org.apache.hadoop.mapred.Task.done(Task.java:1025)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:345)
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:1694)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:158)
{code}
{{TaskCommitContextRegistry::commitTask()}} uses call-backs registered from
{{DynamicPartitionFileRecordWriter}}. But in case {{HCatInputFormat}} and
{{HCatOutputFormat}} are both used in the same job, the
{{DynamicPartitionFileRecordWriter}} might only be exercised in the Reducer.
I'm relaxing the IOException, and log a warning message instead of just failing.
(I'll post the fix shortly.)
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