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https://issues.apache.org/jira/browse/IMPALA-2807?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong updated IMPALA-2807:
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Priority: Major (was: Critical)
> During insert operation impala creates too many files for a table size <
> block size
> -----------------------------------------------------------------------------------
>
> Key: IMPALA-2807
> URL: https://issues.apache.org/jira/browse/IMPALA-2807
> Project: IMPALA
> Issue Type: Improvement
> Components: Perf Investigation
> Affects Versions: Impala 2.3.0
> Reporter: Dileep Kumar
> Priority: Major
>
> When loading the "customer" table from TPC-DS based schema, total no. of
> files created is 20 (which is equal to number of impala nodes in the cluster).
> The total size of the this table is 204.2 MiB which can fit in a single block
> while it occupies 20 blocks in this case.
> When ran the same insert command with a single impalad running in the cluster
> single block was able to hold all the table data and only one hdfs file was
> created.
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