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From "Robert (JIRA)" <j...@apache.org>
Subject [jira] Created: (HADOOP-3506) Occasional NPE in Jets3tFileSystemStore
Date Thu, 05 Jun 2008 23:14:47 GMT
Occasional NPE in Jets3tFileSystemStore
---------------------------------------

                 Key: HADOOP-3506
                 URL: https://issues.apache.org/jira/browse/HADOOP-3506
             Project: Hadoop Core
          Issue Type: Bug
          Components: fs/s3
    Affects Versions: 0.17.0
            Reporter: Robert


In extraordinary circumstances (eg. S3 outages), calling S3FileSystem functions will throw
NullPointerExceptions when trying to read from the filesystem. I've traced this down to calls
to Jets3tFileSystemStore.get().

Both get() functions catch an S3ServiceException, and check its error code using a string
comparison. However, the underlying libs3t library will sometimes produce an exception with
a null error code string. This results in an NPE that propagates all the way to the S3FileSystem,
and to the caller.

To fix this, Jets3tFileSystemStore lines 196 and 212 should be changed from:
bq.         if (e.getS3ErrorCode().equals("NoSuchKey")) {
to:
bq.         if ("NoSuchKey".equals(e.getS3ErrorCode())) {



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