Mingliang Liu created HADOOP-13284:
--------------------------------------
Summary: Remove the rack-aware read stats in
FileSystemStorageStatistics from branch-2
Key: HADOOP-13284
URL: https://issues.apache.org/jira/browse/HADOOP-13284
Project: Hadoop Common
Issue Type: Sub-task
Affects Versions: 2.8.0
Reporter: Mingliang Liu
Assignee: Mingliang Liu
As [HDFS-9579] was not committed to {{branch-2.8}},
{{FileSystemStorageStatistics#KEYS}} should not include those rack aware read
stats brought by [HDFS-9579], including {{bytesReadLocalHost,
bytesReadDistanceOfOneOrTwo, bytesReadDistanceOfThreeOrFour,
bytesReadDistanceOfFiveOrLarger}}. Or else, the long iterator will throw NPE
when traversing. See detailed exception stack as following (it happens when Tez
uses the new FileSystemStorageStatistics).
{code}
2016-06-15 15:56:59,242 [DEBUG] [TezChild] |impl.TezProcessorContextImpl|:
Cleared TezProcessorContextImpl related information
2016-06-15 15:56:59,243 [WARN] [main] |task.TezTaskRunner2|: Exception from
RunnerCallable
java.lang.NullPointerException
at
org.apache.hadoop.fs.FileSystemStorageStatistics$LongStatisticIterator.next(FileSystemStorageStatistics.java:74)
at
org.apache.hadoop.fs.FileSystemStorageStatistics$LongStatisticIterator.next(FileSystemStorageStatistics.java:51)
at
org.apache.tez.runtime.metrics.FileSystemStatisticsUpdater2.updateCounters(FileSystemStatisticsUpdater2.java:51)
at
org.apache.tez.runtime.metrics.TaskCounterUpdater.updateCounters(TaskCounterUpdater.java:118)
at
org.apache.tez.runtime.RuntimeTask.setFrameworkCounters(RuntimeTask.java:172)
at
org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:100)
at
org.apache.tez.runtime.task.TaskRunner2Callable.callInternal(TaskRunner2Callable.java:37)
at org.apache.tez.common.CallableWithNdc.call(CallableWithNdc.java:36)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
2016-06-15 15:56:59,245 [DEBUG] [main] |task.TaskReporter|: Sending heartbeat
to AM, request={ containerId=container_1466028486194_0005_01_000002,
requestId=10, startIndex=0, preRoutedStartIndex=1, maxEventsToGet=500,
taskAttemptId=attempt_1466028486194_0005_1_00_000000_0, eventCount=4 }
{code}
Thanks [~hitesh] for reporting this.
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