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https://issues.apache.org/jira/browse/HDDS-11816?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wei-Chiu Chuang updated HDDS-11816:
-----------------------------------
Summary: Ozone stream to support Hsync,Hflush (was: Terasort fails to
hsync for Ozone Streaming)
> Ozone stream to support Hsync,Hflush
> ------------------------------------
>
> Key: HDDS-11816
> URL: https://issues.apache.org/jira/browse/HDDS-11816
> Project: Apache Ozone
> Issue Type: Bug
> Reporter: Wei-Chiu Chuang
> Assignee: Ashish Kumar
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.0.0
>
>
>
> {noformat}
> Error: java.lang.IllegalStateException: Failed to hsync: The underlying
> OutputStream (class org.apache.hadoop.fs.ozone.OzoneFSDataStreamOutput) is
> not Syncable.
> at
> org.apache.hadoop.ozone.client.io.SelectorOutputStream.hsync(SelectorOutputStream.java:181)
> at
> org.apache.hadoop.fs.FSDataOutputStream.hsync(FSDataOutputStream.java:145) at
> org.apache.hadoop.examples.terasort.TeraOutputFormat$TeraRecordWriter.close(TeraOutputFormat.java:83)
> at
> org.apache.hadoop.mapred.MapTask$NewDirectOutputCollector.close(MapTask.java:682)
> at
> org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:805) at
> org.apache.hadoop.mapred.MapTask.run(MapTask.java:347) at
> org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:178) at
> java.base/java.security.AccessController.doPrivileged(Native Method) at
> java.base/javax.security.auth.Subject.doAs(Subject.java:423) at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1910)
> at
> org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:172)
> {noformat}
> workaround: specify -Dmapreduce.terasort.final.sync=false
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