Rajesh Balamohan created TEZ-863:
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Summary: NullPointerException in shuffle phase
Key: TEZ-863
URL: https://issues.apache.org/jira/browse/TEZ-863
Project: Apache Tez
Issue Type: Bug
Affects Versions: 0.3.0
Environment: Hadoop 2.3.0, Hive 0.13, Tez 0.3.0
Reporter: Rajesh Balamohan
Priority: Critical
When running amplab-benchmark (query 2a, 2b, 2c), randomly the following
exception is thrown. It is not very consistent though.
Amplab query reference: https://amplab.cs.berkeley.edu/benchmark/
>>>
SELECT SUBSTR(sourceIP, 1, 10), SUM(adRevenue) FROM uservisits GROUP BY
SUBSTR(sourceIP, 1, 10)
>>>
Vertex re-running, vertexName=Map 1, vertexId=vertex_1392875986731_0052_2_01
Vertex failed, vertexName=Reducer 2, vertexId=vertex_1392875986731_0052_2_00,
diagnostics=[Task failed, taskId=task_1392875986731_0052_2_00_000030,
diagnostics=[AttemptID:attempt_1392875986731_0052_2_00_000030_0 Info:Error:
java.lang.NullPointerException
at
org.apache.tez.runtime.library.common.shuffle.impl.Shuffle.handleEvents(Shuffle.java:175)
at
org.apache.tez.runtime.library.input.ShuffledMergedInput.handleEvents(ShuffledMergedInput.java:195)
at
org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.handleEvent(LogicalIOProcessorRuntimeTask.java:566)
at
org.apache.tez.runtime.LogicalIOProcessorRuntimeTask.access$1100(LogicalIOProcessorRuntimeTask.java:81)
at
org.apache.tez.runtime.LogicalIOProcessorRuntimeTask$1.run(LogicalIOProcessorRuntimeTask.java:628)
at java.lang.Thread.run(Thread.java:744)
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