[HIVE-16860] HostUtil.getTaskLogUrl change between hadoop 2.3 and 2.4 breaks at runtime. - ASF JIRA

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Details

Type: Bug
Status: Resolved
Priority: Major
Resolution: Invalid
Affects Version/s: 0.14.0
Fix Version/s: None
Component/s: Shims
Labels:
None

Description

Original issue in ~~HIVE-6900~~ :

The signature for HostUtil.getTaskLogUrl has changed between Hadoop-2.3 and Hadoop-2.4.

Code in shims/0.23/src/main/java/org/apache/hadoop/hive/shims/Hadoop23Shims.java works with Hadoop-2.3 method and causes compilation failure with Hadoop-2.4.

The issue with ~~HIVE-6900~~ is still not completely fixed, in that compilation succeeds, but this fails now at runtime because https://issues.apache.org/jira/secure/attachment/12651497/MAPREDUCE-5830.patch was committed in hadoop - The result is that our reflection check to see if the 23_METHOD exists succeeds, which means 23_METHOD will not be null, and 24_METHOD will be null, and thus, at runtime, we will wind up calling 23_METHOD. If hadoop had not "fixed" this bug, with this fix, our shim works, but with their fix, it looks like we still have a runtime problem.