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https://issues.apache.org/jira/browse/IMPALA-5778?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong resolved IMPALA-5778.
-----------------------------------
Resolution: Fixed
Fix Version/s: Impala 2.10.0
IMPALA-5778: clarify --read_size option.
Remove BTS_BLOCK_OVERFLOW error code, which is no longer used and
referenced --read_size.
Improve the flag description. The output is now:
-read_size ((Advanced) The preferred I/O request size in bytes to issue to
HDFS or the local filesystem. Increasing the read size will increase
memory requirements. Decreasing the read size may decrease I/O
throughput.) type: int32 default: 8388608
Testing:
Tested that Impala built and basic queries could run.
Change-Id: I3c20a9d55f89170b11f569c90b7f2949ddbe4211
Reviewed-on: http://gerrit.cloudera.org:8080/7623
Reviewed-by: Tim Armstrong <[email protected]>
Tested-by: Impala Public Jenkins
> Clarify logging around and usage of read_size startup option
> ------------------------------------------------------------
>
> Key: IMPALA-5778
> URL: https://issues.apache.org/jira/browse/IMPALA-5778
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Reporter: Balazs Jeszenszky
> Assignee: Tim Armstrong
> Fix For: Impala 2.10.0
>
>
> The following error message:
> "Cannot process row that is bigger than the IO size (row_size=X MB,
> null_indicators_size=0). To run this query, increase the IO size (--read_size
> option)."
> https://github.com/cloudera/Impala/blob/cba02a9a8b8cb765f9f4d2884f0a45e9af1bf2c7/common/thrift/generate_error_codes.py#L209-L211
>
> , and the read_size option in general, needs to be reviewed to reflect
> changes from IMPALA-3200.
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