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https://issues.apache.org/jira/browse/IMPALA-14763?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yida Wu resolved IMPALA-14763.
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Fix Version/s: Impala 5.0.0
Target Version: Impala 5.0.0
Resolution: Fixed
> Add memory guard before decompressing queries in admissiond
> -----------------------------------------------------------
>
> Key: IMPALA-14763
> URL: https://issues.apache.org/jira/browse/IMPALA-14763
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Reporter: Yida Wu
> Assignee: Yida Wu
> Priority: Critical
> Fix For: Impala 5.0.0
>
>
> When admissiond is close to its memory limit and a very large query is
> dequeued, decompression (when compression is enabled) can push memory usage
> over the limit and cause OOM.
> We should add a protection similar to IMPALA-14493 to reject the queued query
> before decompression if current_memory + uncompressed_size > memory_limit.
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