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Posted to issues@impala.apache.org by "Yida Wu (Jira)" <ji...@apache.org> on 2021/10/01 02:13:00 UTC

[jira] [Created] (IMPALA-10945) Unfavorable change on the S3 scratch path behavior

Yida Wu created IMPALA-10945:
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             Summary: Unfavorable change on the S3 scratch path behavior
                 Key: IMPALA-10945
                 URL: https://issues.apache.org/jira/browse/IMPALA-10945
             Project: IMPALA
          Issue Type: Bug
          Components: Backend
    Affects Versions: Impala 4.1.0
            Reporter: Yida Wu
            Assignee: Yida Wu


IMPALA-10429 "Support Spill to HDFS" introduces a new behavior to S3 scratch path.

It added a connection verification logic for the S3 path (for optimization), but the HdfsFsCache requires the path to have a directory behind, like "s3a://host/dir", otherwise it will throw an error. 

[https://github.com/apache/impala/blob/1a61a8025c87c37921a1bba4c49f754d8bd10bcc/be/src/runtime/tmp-file-mgr.cc#L333]

The change brings a problem, that may require the user to have a different s3a scratch path. It would be good to be compatible with the path we support in the previous version.



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