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Posted to issues@impala.apache.org by "Yida Wu (Jira)" <ji...@apache.org> on 2026/02/20 16:33:00 UTC

[jira] [Created] (IMPALA-14763) Add memory guard before decompressing queries in admissiond

Yida Wu created IMPALA-14763:
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             Summary: 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


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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