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MCOL-901 Significanlty reduced memory consumption for group_concat().

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RowGroup default constructor allocates memory too generously.

    Removed commented code from groupconcat.cpp.
This commit is contained in:
Roman Nozdrin
2019-01-26 16:30:02 +03:00
parent 13398fa530
commit 6d65b13852
2 changed files with 20 additions and 49 deletions
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13
utils/rowgroup/rowgroup.cpp
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@ -1211,12 +1211,13 @@ int64_t Row::getSignedNullValue(uint32_t colIndex) const
RowGroup::RowGroup() : columnCount(0), data(NULL), rgData(NULL), strings(NULL),
useStringTable(true), hasLongStringField(false), sTableThreshold(20)
{
oldOffsets.reserve(1024);
oids.reserve(1024);
keys.reserve(1024);
types.reserve(1024);
scale.reserve(1024);
precision.reserve(1024);
// 1024 is too generous to waste.
oldOffsets.reserve(10);
oids.reserve(10);
keys.reserve(10);
types.reserve(10);
scale.reserve(10);
precision.reserve(10);
}
RowGroup::RowGroup(uint32_t colCount,