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Review request for hive. Repository: hive-git Description ------- Approach in the patch is similar to what Oozie does to handle this situation. Specifically, all child map jobs get tagged with the launcher MR job id. On launcher task restart, launcher queries RM for the list of jobs that have the tag and kills them. After that it moves on to start the same child job again. Again, similarly to what Oozie does, a new templeton.job.launch.time property is introduced that captures the launcher job submit timestamp and later used to reduce the search window when RM is queried. To validate the patch, you will need to add webhcat shim jars to templeton.libjars as now webhcat launcher also has a dependency on hadoop shims. I have noticed that in case of the SqoopDelegator webhcat currently does not set the MR delegation token when optionsFile flag is used. This also creates the problem in this scenario. This looks like something that should be handled via a separate Jira. Diffs ----- hcatalog/webhcat/svr/src/main/java/org/apache/hive/hcatalog/templeton/HiveDelegator.java 23b1c4f hcatalog/webhcat/svr/src/main/java/org/apache/hive/hcatalog/templeton/JarDelegator.java 41b1dc5 hcatalog/webhcat/svr/src/main/java/org/apache/hive/hcatalog/templeton/LauncherDelegator.java 04a5c6f hcatalog/webhcat/svr/src/main/java/org/apache/hive/hcatalog/templeton/PigDelegator.java 04e061d hcatalog/webhcat/svr/src/main/java/org/apache/hive/hcatalog/templeton/SqoopDelegator.java adcd917 hcatalog/webhcat/svr/src/main/java/org/apache/hive/hcatalog/templeton/tool/JobSubmissionConstants.java a6355a6 hcatalog/webhcat/svr/src/main/java/org/apache/hive/hcatalog/templeton/tool/LaunchMapper.java 556ee62 shims/0.20S/src/main/java/org/apache/hadoop/mapred/WebHCatJTShim20S.java d3552c1 shims/0.23/src/main/java/org/apache/hadoop/mapred/WebHCatJTShim23.java 5a728b2 shims/common/src/main/java/org/apache/hadoop/hive/shims/HadoopShims.java 299e918 Diff: https://reviews.apache.org/r/22329/diff/ Testing ------- I have validated that MR, Pig and Hive jobs do get tagged appropriately. I have also validated that previous child jobs do get killed on RM failover/task failure. Thanks, Ivan Mitic
