Bibin A Chundatt created MAPREDUCE-6554:
-------------------------------------------
Summary: MRAppMaster servicestart failing with NPE in
MRAppMaster#parsePreviousJobHistory
Key: MAPREDUCE-6554
URL: https://issues.apache.org/jira/browse/MAPREDUCE-6554
Project: Hadoop Map/Reduce
Issue Type: Bug
Reporter: Bibin A Chundatt
Assignee: Bibin A Chundatt
Priority: Critical
Create scenario so that MR app master gets preempted.
On next MRAppMaster launch tried to recover previous job history file
{{MRAppMaster#parsePreviousJobHistory}}
{noformat}
2015-11-21 13:52:27,722 INFO [main] org.apache.hadoop.service.AbstractService:
Service org.apache.hadoop.mapreduce.v2.app.MRAppMaster failed in state STARTED;
cause: java.lang.NullPointerException
java.lang.NullPointerException
at java.io.StringReader.<init>(StringReader.java:50)
at org.apache.avro.Schema$Parser.parse(Schema.java:917)
at org.apache.avro.Schema.parse(Schema.java:966)
at
org.apache.hadoop.mapreduce.jobhistory.EventReader.<init>(EventReader.java:75)
at
org.apache.hadoop.mapreduce.jobhistory.JobHistoryParser.parse(JobHistoryParser.java:139)
at
org.apache.hadoop.mapreduce.v2.app.MRAppMaster.parsePreviousJobHistory(MRAppMaster.java:1256)
at
org.apache.hadoop.mapreduce.v2.app.MRAppMaster.processRecovery(MRAppMaster.java:1225)
at
org.apache.hadoop.mapreduce.v2.app.MRAppMaster.serviceStart(MRAppMaster.java:1087)
at
org.apache.hadoop.service.AbstractService.start(AbstractService.java:193)
at
org.apache.hadoop.mapreduce.v2.app.MRAppMaster$4.run(MRAppMaster.java:1570)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1673)
at
org.apache.hadoop.mapreduce.v2.app.MRAppMaster.initAndStartAppMaster(MRAppMaster.java:1566)
at
org.apache.hadoop.mapreduce.v2.app.MRAppMaster.main(MRAppMaster.java:1499)
2015-11-21 13:52:27,725 INFO [main]
org.apache.hadoop.mapreduce.jobhistory.JobHistoryEventHandler: Stopping
JobHistoryEventHandler. Size of the outstanding queue size is 0
{noformat}
EventReader(EventReader stream)
{noformat}
this.version = in.readLine();
...
this.schema = parser.parse(in.readLine());
{noformat}
check for null and return {{IOException}} in {{parser.parse(in.readLine())}}
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