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Bibin A Chundatt updated MAPREDUCE-6554: ---------------------------------------- Attachment: 0002-MAPREDUCE-6554.patch > 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 > Attachments: 0001-MAPREDUCE-6554.patch, 0002-MAPREDUCE-6554.patch > > > 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(); > ... > Schema myschema = new > SpecificData(Event.class.getClassLoader()).getSchema(Event.class); > this.schema = Schema.parse(in.readLine()); > {noformat} -- This message was sent by Atlassian JIRA (v6.3.4#6332)