Riza Suminto has uploaded this change for review. ( 
http://gerrit.cloudera.org:8080/21455


Change subject: IMPALA-13075: Cap memory usage for ExprValuesCache at 256KB
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IMPALA-13075: Cap memory usage for ExprValuesCache at 256KB

ExprValuesCache uses BATCH_SIZE as a deciding factor to set its
capacity. It bounds the capacity such that expr_values_array_ memory
usage stays below 256KB. This patch tightens that limit to include all
memory usage from ExprValuesCache::MemUsage() instead of
expr_values_array_ only. Therefore, setting a very high BATCH_SIZE will
not push the total memory usage of ExprValuesCache beyond 256KB.

Testing:
- Add test_join_queries.py::TestExprValueCache.
- Pass core tests.

Change-Id: Iee27cbbe8d3100301d05a6516b62c45975a8d0e0
---
M be/src/exec/hash-table.cc
M be/src/exec/hash-table.h
A testdata/workloads/tpcds_partitioned/queries
M tests/common/test_dimensions.py
M tests/query_test/test_join_queries.py
5 files changed, 45 insertions(+), 4 deletions(-)



  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/55/21455/1
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newchange
Gerrit-Change-Id: Iee27cbbe8d3100301d05a6516b62c45975a8d0e0
Gerrit-Change-Number: 21455
Gerrit-PatchSet: 1
Gerrit-Owner: Riza Suminto <riza.sumi...@cloudera.com>

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