database/mariadb-columnstore-engine
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MCOL-5522 Properly process pm join result count.

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This patch:
1. Properly processes situation when pm join result count is exceeded.
2. Adds session variable 'columnstore_max_pm_join_result_count` to control the limit.
This commit is contained in:
Denis Khalikov
2023-07-20 15:48:29 +03:00
committed by Leonid Fedorov
parent 9f15a0a9ac
commit 5f07828619
17 changed files with 195 additions and 102 deletions
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3
dbcon/execplan/calpontselectexecutionplan.cpp
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@@ -85,6 +85,7 @@ CalpontSelectExecutionPlan::CalpontSelectExecutionPlan(const int location)
, fDJSSmallSideLimit(0)
, fDJSLargeSideLimit(0)
, fDJSPartitionSize(100 * 1024 * 1024)
, fMaxPmJoinResultCount(1048576)
, // 100MB mem usage for disk based join,
fUMMemLimit(numeric_limits<int64_t>::max())
, fIsDML(false)
@@ -498,6 +499,7 @@ void CalpontSelectExecutionPlan::serialize(messageqcpp::ByteStream& b) const
b << fDJSSmallSideLimit;
b << fDJSLargeSideLimit;
b << fDJSPartitionSize;
b << (uint32_t)fMaxPmJoinResultCount;
b << fUMMemLimit;
b << (uint8_t)fIsDML;
messageqcpp::ByteStream::octbyte timeZone = fTimeZone;
@@ -693,6 +695,7 @@ void CalpontSelectExecutionPlan::unserialize(messageqcpp::ByteStream& b)
b >> fDJSSmallSideLimit;
b >> fDJSLargeSideLimit;
b >> fDJSPartitionSize;
b >> (uint32_t&)fMaxPmJoinResultCount;
b >> fUMMemLimit;
b >> tmp8;
fIsDML = tmp8;