[jira] [Created] (HBASE-21183) loadincrementalHFiles sometimes throws FileNotFoundException on retry

["Tim Robertson (JIRA)" <ji...@apache.org>]

Tim Robertson created HBASE-21183:
-------------------------------------

             Summary: loadincrementalHFiles sometimes throws FileNotFoundException on retry
                 Key: HBASE-21183
                 URL: https://issues.apache.org/jira/browse/HBASE-21183
             Project: HBase
          Issue Type: Bug
    Affects Versions: 1.2.0
            Reporter: Tim Robertson


On a nightly batch job which prepares 100s of well balanced HFiles at around 2GB each, we see sporadic failures in a bulk load. 

I'm unable to paste the logs here (different network) but they show e.g. the following on a failing day:
{code}
Trying to load hfile... /my/input/path/...
Attempt to bulk load region containing ... failed. This is recoverable and will be retried
Attempt to bulk load region containing ... failed. This is recoverable and will be retried
Attempt to bulk load region containing ... failed. This is recoverable and will be retried
Split occurred while grouping HFiles, retry attempt 1 with 3 files remaining to group or split
Trying to load hfile...
IOException during splitting
java.io.FileNotFoundException: File does not exist: /my/input/path/...
{code}
The exception get's thrown from [this line|https://github.com/apache/hbase/blob/branch-1.2/hbase-server/src/main/java/org/apache/hadoop/hbase/mapreduce/LoadIncrementalHFiles.java#L685].
  
 I should note that this is a secure cluster (CDH 5.12.x).

I've tried to go through the code, and don't spot an obvious race condition. I don't spot any changes related to this for the later 1.x versions so presume this exists in 1.5.

I'm yet to get access to the NameNode audit logs when this occurs to trace through the rename() calls around these particular files.



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