Yida Wu created IMPALA-14661:
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Summary: Optimize admissiond memory usage by compressing RPC
payloads
Key: IMPALA-14661
URL: https://issues.apache.org/jira/browse/IMPALA-14661
Project: IMPALA
Issue Type: Sub-task
Components: Backend
Affects Versions: Impala 4.5.0
Reporter: Yida Wu
Assignee: Yida Wu
In global admissiond mode, the TQueryExecRequest in the admission request can
be very large for complex queries, consuming significant memory in the
admissiond service.
This task is to optimize memory usage by compressing the request payload on the
client side (coordinator) before sending. On the server side (admissiond), we
store the compressed version in memory and only decompress it just-in-time when
the admission decision is actually being made. This can largely reduces the
memory footprint for queued queries.
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