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Content of MON$EXPLAINED_PLAN in MON$STATEMENTS is truncated if exceeds the 32KB limit [CORE4708] #5016

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firebird-automations opened this issue Mar 14, 2015 · 11 comments
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Content of MON$EXPLAINED_PLAN in MON$STATEMENTS is truncated if exceeds the 32KB limit [CORE4708] #5016

firebird-automations opened this issue Mar 14, 2015 · 11 comments
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@dyemanov
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affect-version: 3.0 Beta 2 fix-version: 3.0 RC2 priority: major qa: done successfully type: bug

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Submitted by: @livius2

I read that to get unlimited text of explained plan i should look into
TMP$STATEMENTS

but i got limited text in MON$EXPLAINED_PLAN in MON$STATEMENTS for some big
query
it end after 14 808 bytes as
"Select Expression
-"
nothing more

Commits: 3b04931 FirebirdSQL/fbt-repository@04e7897

====== Test Details ======

Test query has explained plan with length ~47 Kb (checked on WI-V3.0.0.32253).
Instead of checking explained plan text it is enough only to ensure that its
LENGTH is more than 32K and that text is not cuted off, i.e. it should end with
phrase: Table "MON$STATEMENTS" Full Scan
Another sample of query that has long plan see in core_5061.fbt
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Modified by: @livius2

Version: 3.0 Beta 2 [ 10586 ]

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Modified by: @dyemanov

assignee: Dmitry Yemanov [ dimitr ]

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Commented by: @livius2

To test this you can run query from CORE4710
but i see that this is not only 14808 bytes limit but sometimes smaller value

@firebird-automations
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Modified by: @dyemanov

Fix Version: 3.0 RC 1 [ 10584 ]

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Modified by: @dyemanov

Fix Version: 3.0 RC 1 [ 10584 ] =>

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Modified by: @dyemanov

Fix Version: 3.0.0 [ 10048 ]

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Modified by: @dyemanov

summary: content of MON$EXPLAINED_PLAN in MON$STATEMENTS is limited to 14 808 bytes => Content of MON$EXPLAINED_PLAN in MON$STATEMENTS is truncated if exceeds the 32KB limit

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Modified by: @dyemanov

status: Open [ 1 ] => Resolved [ 5 ]

resolution: Fixed [ 1 ]

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Modified by: @pavel-zotov

status: Resolved [ 5 ] => Resolved [ 5 ]

QA Status: Done successfully

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Modified by: @pavel-zotov

status: Resolved [ 5 ] => Resolved [ 5 ]

Test Details: Test query has explained plan with length ~47 Kb (checked on WI-V3.0.0.32253).
Instead of checking explained plan text it is enough only to ensure that its
LENGTH is more than 32K and that text is not cuted off, i.e. it should end with
phrase: Table "MON$STATEMENTS" Full Scan
Another sample of query that has long plan see in core_5061.fbt

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Modified by: @pavel-zotov

status: Resolved [ 5 ] => Closed [ 6 ]

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affect-version: 3.0 Beta 2 fix-version: 3.0 RC2 priority: major qa: done successfully type: bug
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