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https://issues.apache.org/jira/browse/HIVE-18269?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prasanth Jayachandran reassigned HIVE-18269:
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> LLAP: Fast llap io with slow processing pipeline can lead to OOM
> ----------------------------------------------------------------
>
> Key: HIVE-18269
> URL: https://issues.apache.org/jira/browse/HIVE-18269
> Project: Hive
> Issue Type: Bug
> Affects Versions: 3.0.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
>
> pendingData linked list in Llap IO elevator (LlapRecordReader.java) may have
> grow indefinitely when Llap IO is faster than processing pipeline. Since we
> don't have backpressure to slow down the IO, this can lead to indefinite
> growth of pending data leading to severe GC pressure and eventually lead to
> OOM.
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