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Posted to issues@impala.apache.org by "Alexander Behm (JIRA)" <ji...@apache.org> on 2018/03/15 17:53:00 UTC

[jira] [Created] (IMPALA-6675) Change default configuration to --compact_catalog_topic=true

Alexander Behm created IMPALA-6675:
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             Summary: Change default configuration to --compact_catalog_topic=true
                 Key: IMPALA-6675
                 URL: https://issues.apache.org/jira/browse/IMPALA-6675
             Project: IMPALA
          Issue Type: Improvement
          Components: Backend
    Affects Versions: Impala 2.11.0
            Reporter: Alexander Behm
            Assignee: Alexander Behm


The catalog metadata can become large and lead to excessive network traffic due to dissemination via the statestore. The --compact_catalog_topic flag was introduced to mitigate this issue by compressing the catalog topic entries to reduce their serialized size.
This saves network bandwidth at the cost of a small quantity of CPU time.

To improve the out-of-the box experience of users we should enable this flag by default.



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