[ https://issues.apache.org/jira/browse/HADOOP-17657?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Work on HADOOP-17657 started by Kishen Das. ------------------------------------------- > SequeneFile.Writer should implement StreamCapabilities > ------------------------------------------------------ > > Key: HADOOP-17657 > URL: https://issues.apache.org/jira/browse/HADOOP-17657 > Project: Hadoop Common > Issue Type: Bug > Reporter: Kishen Das > Assignee: Kishen Das > Priority: Major > Labels: pull-request-available > Time Spent: 1.5h > Remaining Estimate: 0h > > Following exception is thrown whenever we invoke ProtoMessageWriter.hflush on > S3 from Tez, which internally calls > org.apache.hadoop.io.SequenceFile$Writer.hflush -> org.apache.hadoop.fs.FS > DataOutputStream.hflush -> S3ABlockOutputStream.hflush which is not > implemented and throws java.lang.UnsupportedOperationException. > bdffe22d96ae [mdc@18060 class="yarn.YarnUncaughtExceptionHandler" > level="ERROR" thread="HistoryEventHandlingThread"] Thread > Thread[HistoryEventHandlingThread, 5,main] threw an > Exception.^Mjava.lang.UnsupportedOperationException: S3A streams are not > Syncable^M at > org.apache.hadoop.fs.s3a.S3ABlockOutputStream.hflush(S3ABlockOutputStream.java:657)^M > at org.apache.hadoop.fs.FS > DataOutputStream.hflush(FSDataOutputStream.java:136)^M at > org.apache.hadoop.io.SequenceFile$Writer.hflush(SequenceFile.java:1367)^M at > org.apache.tez.dag.history.logging.proto.ProtoMessageWriter.hflush(ProtoMessageWr > iter.java:64)^M at > org.apache.tez.dag.history.logging.proto.ProtoHistoryLoggingService.finishCurrentDag(ProtoHistoryLoggingService.java:239)^M > at org.apache.tez.dag.history.logging.proto.ProtoHistoryLoggingService.han > dleEvent(ProtoHistoryLoggingService.java:198)^M at > org.apache.tez.dag.history.logging.proto.ProtoHistoryLoggingService.loop(ProtoHistoryLoggingService.java:153)^M > at java.lang.Thread.run(Thread.java:748)^M > In order to fix this issue we should implement StreamCapabilities in > SequenceFile.Writer. Also, we should fall back to flush(), if hflush() is not > supported. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org