database/mariadb-columnstore-engine
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fix(memory leaks): MCOL-5791 - get rid of memory leaks in plugin code

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There were numerous memory leaks in plugin's code and associated code.
During typical run of MTR tests it leaked around 65 megabytes of
objects. As a result they may severely affect long-lived connections.

This patch fixes (almost) all leaks found in the plugin. The exceptions
are two leaks associated with SHOW CREATE TABLE columnstore_table and
getting information of columns of columnstore-handled table. These
should be fixed on the server side and work is on the way.
This commit is contained in:
Serguey Zefirov
2024-09-30 14:50:35 +03:00
committed by Sergey Zefirov
parent 6445f4dff3
commit 38fd96a663
31 changed files with 472 additions and 229 deletions
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2
dbcon/mysql/ha_from_sub.cpp
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@ -424,7 +424,7 @@ SCSEP FromSubQuery::transform()
csep->subType(CalpontSelectExecutionPlan::FROM_SUBS);
// gwi for the sub query
gp_walk_info gwi(fGwip.timeZone);
gp_walk_info gwi(fGwip.timeZone, fGwip.subQueriesChain);
gwi.thd = fGwip.thd;
gwi.subQuery = this;
gwi.viewName = fGwip.viewName;