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Andrew Wang commented on HDFS-11395: ------------------------------------ I backported this to branch-2.8 to make another backport easier, looks like a good fix too. > RequestHedgingProxyProvider#RequestHedgingInvocationHandler hides the > Exception thrown from NameNode > ---------------------------------------------------------------------------------------------------- > > Key: HDFS-11395 > URL: https://issues.apache.org/jira/browse/HDFS-11395 > Project: Hadoop HDFS > Issue Type: Bug > Components: ha > Reporter: Nandakumar > Assignee: Nandakumar > Fix For: 3.0.0-alpha3, 2.8.1 > > Attachments: HDFS-11395.000.patch, HDFS-11395.001.patch, > HDFS-11395.002.patch, HDFS-11395.003.patch, HDFS-11395.004.patch, > HDFS-11395.005.patch > > > When using RequestHedgingProxyProvider, in case of Exception (like > FileNotFoundException) from ActiveNameNode, > {{RequestHedgingProxyProvider#RequestHedgingInvocationHandler.invoke}} > receives {{ExecutionException}} since we use {{CompletionService}} for the > call. The ExecutionException is put into a map and wrapped with > {{MultiException}}. > So for a FileNotFoundException the client receives > {{MultiException(Map(ExecutionException(InvocationTargetException(RemoteException(FileNotFoundException)))))}} > It will cause problem in clients which are handling RemoteExceptions. -- This message was sent by Atlassian JIRA (v6.3.15#6346) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org