Venkatasubrahmanian Narayanan created HADOOP-19091:
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Summary: Add support for Tez to MagicS3GuardCommitter
Key: HADOOP-19091
URL: https://issues.apache.org/jira/browse/HADOOP-19091
Project: Hadoop Common
Issue Type: Bug
Components: tools
Affects Versions: 3.3.3
Environment: Pig 17/Hive 3.1.3 with Hadoop 3.3.3 on AWS EMR 6-12.0
Reporter: Venkatasubrahmanian Narayanan
The MagicS3GuardCommitter assumes that the JobID of the task is the same as
that of the job's application master when writing/reading the .pendingset file.
This assumption is not valid when running with Tez, which creates slightly
different JobIDs for tasks and the application master.
While the MagicS3GuardCommitter is intended only for MRv2, it mostly works fine
with an MRv1 wrapper with Hive/Pig (with some minor changes to Hive) run in MR
mode. This issue only crops up when running queries with the Tez execution
engine. I can upload a patch to Hive 3.1 to reproduce this error on EMR if
needed.
Fixing this will probably require work from both Tez and Hadoop, wanted to
start a discussion here so we can figure out how exactly we go about this.
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