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SERVER-77901 query plancache replan improvement

1

the replan works can not exceed the number of works that is set to be the fraction of the collection size. in extreme cases, if there are no restrictions, Probably...

y123456yz

SERVER-78124: add query count in getPlanCache list, this can help us to get the hot query sql.

1

We have such a problem， When there are a lot of sql queries, some query have more than one candidate index,and have many slow log， maybe index problem, we don't...

y123456yz

SERVER-77899 remove repeat contain index from the relevant candidate indexes, this can avoid some useless calculations.

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// remove repeat contain index from the relevant candidate indexes, this can avoid some useless calculations. // for example: // {a:1, b:1} contain {a:1}, so we can remove index {a:1}...

y123456yz

SERVER-78113: not cache meaningless plan, it will increased memory overhead and increase computing overhead.

1

// when the mode is PlanCachingMode::AlwaysCache or PlanCachingMode::SometimesCache, there is a special case. // take Classic plan cache for example: // If the winning index's advanced = 0 && works...

y123456yz

…is logged at level 0 100x more often than intended

ispringer

SERVER-72276 Removing outdated entries for multiversion tests

2

aaron-morand

CVE-2007-4559 Patch

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# Patching CVE-2007-4559 Hi, we are security researchers from the Advanced Research Center at [Trellix](https://www.trellix.com). We have began a campaign to patch a widespread bug named CVE-2007-4559. CVE-2007-4559 is a...

TrellixVulnTeam

Fix typos

1

ViToni

chore: remove repetitive words

1

stayweek

Security fix - To handle user account password complexity

1

### Problem Description: Security fix - To handle user account password complexity ### Fix Implementation: The source code has been integrated to handle the password complexity validation mechanism. This modification...

Sandhyaranitp