[Impala-ASF-CR] IMPALA-11786: Preserve memory for codegen cache

["Yida Wu (Code Review)" <ge...@cloudera.org>]

Yida Wu has uploaded a new patch set (#3). ( http://gerrit.cloudera.org:8080/19377 )

Change subject: IMPALA-11786: Preserve memory for codegen cache
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IMPALA-11786: Preserve memory for codegen cache

IMPALA-11470 adds support for codegen cache, however the admission
controller is not aware of the memory usage of the codegen cache,
while the codegen cache is actually using the memory quota from
the query memory. It could result in query failures when running
heavy workloads and admission controller has fully admitted queries.

This patch subtracts the codegen cache capacity from the admission
memory limit during initialization, therefore preserving the memory
consumption of codegen cache from the beginning, and treating it as
a separate memory independent to the query memory reservation.

Also changes some failed testcases due to the reduction of the
the admit memory limit.

Tests:
Passed exhaustive tests.

Change-Id: Iebdc04ba1b91578d74684209a11c815225b8505a
---
M be/src/runtime/exec-env.cc
M tests/custom_cluster/test_admission_controller.py
M tests/custom_cluster/test_executor_groups.py
M tests/custom_cluster/test_jvm_mem_tracking.py
4 files changed, 38 insertions(+), 23 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/77/19377/3
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Iebdc04ba1b91578d74684209a11c815225b8505a
Gerrit-Change-Number: 19377
Gerrit-PatchSet: 3
Gerrit-Owner: Yida Wu <wy...@gmail.com>
Gerrit-Reviewer: Abhishek Rawat <ar...@cloudera.com>
Gerrit-Reviewer: Csaba Ringhofer <cs...@cloudera.com>
Gerrit-Reviewer: Impala Public Jenkins <im...@cloudera.com>
Gerrit-Reviewer: Michael Smith <mi...@cloudera.com>
Gerrit-Reviewer: Qifan Chen <qf...@hotmail.com>
Gerrit-Reviewer: Yida Wu <wy...@gmail.com>