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https://issues.apache.org/jira/browse/IMPALA-14583?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Noémi Pap-Takács reassigned IMPALA-14583:
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Assignee: Mihaly Szjatinya
> Limit number of file descriptors per RPC to avoid JVM OOM in Catalog
> --------------------------------------------------------------------
>
> Key: IMPALA-14583
> URL: https://issues.apache.org/jira/browse/IMPALA-14583
> Project: IMPALA
> Issue Type: Improvement
> Components: Catalog, Frontend
> Reporter: Noémi Pap-Takács
> Assignee: Mihaly Szjatinya
> Priority: Critical
> Labels: Catalog, OOM, impala-iceberg
>
> We often get OOM error when Impala tries to load a very large Iceberg table.
> This happens because the Catalog loads all the file descriptors and sends
> them to the Coordinator in one RPC, serializing all the file descriptors into
> one big byte array. However, JVM has a limit on the array length, so trying
> to send the entire table in one call can exceed this limit if there are too
> many files in the table.
> We could limit the number of files per RPC, so that the 2GB JVM array limit
> is not exceeded.
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