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Posted to issues-all@impala.apache.org by "Joe McDonnell (JIRA)" <ji...@apache.org> on 2019/04/17 00:29:00 UTC

[jira] [Created] (IMPALA-8428) Add support for caching file handles on s3

Joe McDonnell created IMPALA-8428:
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             Summary: Add support for caching file handles on s3
                 Key: IMPALA-8428
                 URL: https://issues.apache.org/jira/browse/IMPALA-8428
             Project: IMPALA
          Issue Type: Bug
          Components: Backend
    Affects Versions: Impala 3.3.0
            Reporter: Joe McDonnell


The file handle cache is currently disabled for S3, as the S3 connector needed to implement proper unbuffer support. Now that https://issues.apache.org/jira/browse/HADOOP-14747 is fixed, Impala should provide an option to cache S3 file handles.

This is particularly important for data caching, as accessing the data cache happens after obtaining a file handle. If getting a file handle is slow, the caching will be less effective.



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