database/mariadb-columnstore-engine
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MCOL-1737 Add debug logging options for LRU cache

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This adds options which are user enabled to debug the LRU cache inside
ColumnStore. Specifically cache flushing.

It adds the following:
* PrimProc flush information when SIGUSR2 mode is enabled
* cpimport dictionary flush information when -d2 is used
* WriteEngineServer DML flush information to STDERR
This commit is contained in:
Andrew Hutchings
2018-09-21 09:50:10 +01:00
parent b74838bb50
commit 24c5e93756
4 changed files with 88 additions and 3 deletions
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11
writeengine/bulk/we_tableinfo.cpp
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@ -709,6 +709,17 @@ int TableInfo::setParseComplete(const int &columnId,
#ifdef PROFILE
Stats::startParseEvent(WE_STATS_FLUSH_PRIMPROC_BLOCKS);
#endif
if (fLog->isDebug(DEBUG_2))
{
ostringstream oss;
oss << "Dictionary cache flush: ";
for (uint32_t i = 0; i < fDictFlushBlks.size(); i++)
{
oss << fDictFlushBlks[i] << ", ";
}
oss << endl;
fLog->logMsg( oss.str(), MSGLVL_INFO1 );
}
cacheutils::flushPrimProcAllverBlocks(fDictFlushBlks);
#ifdef PROFILE
Stats::stopParseEvent(WE_STATS_FLUSH_PRIMPROC_BLOCKS);