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* Introduce multigeneration aggregation * Do not save unused part of RGDatas to disk * Add IO error explanation (strerror) * Reduce memory usage while aggregating * introduce in-memory generations to better memory utilization * Try to limit the qty of buckets at a low limit * Refactor disk aggregation a bit * pass calculated hash into RowAggregation * try to keep some RGData with free space in memory * do not dump more than half of rowgroups to disk if generations are allowed, instead start a new generation * for each thread shift the first processed bucket at each iteration, so the generations start more evenly * Unify temp data location * Explicitly create temp subdirectories whether disk aggregation/join are enabled or not
28 lines
913 B
C++
28 lines
913 B
C++
/* Copyright (C) 2019 MariaDB Corporation
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; version 2 of
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the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#ifndef H_SETTHREADNAME
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#define H_SETTHREADNAME
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#include <string>
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namespace utils
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{
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void setThreadName(const char *threadName);
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std::string getThreadName();
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} // end of namespace
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#endif
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