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Steve Loughran commented on HADOOP-16378: ----------------------------------------- lets not worry about that. The main thing is not to suffer here. what's the full stack trace? > RawLocalFileStatus throws exception if a file is created and deleted quickly > ---------------------------------------------------------------------------- > > Key: HADOOP-16378 > URL: https://issues.apache.org/jira/browse/HADOOP-16378 > Project: Hadoop Common > Issue Type: Bug > Components: fs > Affects Versions: 3.3.0 > Environment: Ubuntu 18.04, Hadoop 2.7.3 (Though this problem exists > on later versions of Hadoop as well), Java 8 ( + Java 11). > Reporter: K S > Priority: Critical > > Bug occurs when NFS creates temporary ".nfs*" files as part of file moves and > accesses. If this file is deleted very quickly after being created, a > RuntimeException is thrown. The root cause is in the loadPermissionInfo > method in org.apache.hadoop.fs.RawLocalFileSystem. To get the permission > info, it first does > > {code:java} > ls -ld{code} > and then attempts to get permissions info about each file. If a file > disappears between these two steps, an exception is thrown. > *Reproduction Steps:* > An isolated way to reproduce the bug is to run FileInputFormat.listStatus > over and over on the same dir that we’re creating those temp files in. On > Ubuntu or any other Linux-based system, this should fail intermittently > *Fix:* > One way in which we managed to fix this was to ignore the exception being > thrown in loadPemissionInfo() if the exit code is 1 or 2. Alternatively, it's > possible that turning "useDeprecatedFileStatus" off in RawLocalFileSystem > would fix this issue, though we never tested this, and the flag was > implemented to fix -HADOOP-9652-. Could also fix in conjunction with > HADOOP-8772. > > > > -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org