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Long connection is unusable

7

I grabbed the bag, the rsp package of the test dest machine has a lot of RST.

分库版本包含所有读写分离版本功能，向咨询下为啥要特地弄两个版本？期待回复，谢谢

2

分库版本包含所有读写分离版本功能，向咨询下为啥要特地弄两个版本？期待回复，谢谢 是因为prepare语句功能所以单独加了个读写分离版本？ @wangbin579

SERVER-84667:index check, avoid create duplicate btree indexes, Avoid affecting performance

2

btree index check, avoid create duplicate btree indexes, Avoid affecting performance btree index check, avoid create duplicate btree indexes, Avoid affecting performance by the deplicate index. for example: add two...

SERVER-84220:wiredTigerEngineRuntimeConfig perfect

3

When we modify the configuration information of WT multiple times, Mongo server can only retain the last result and cannot obtain all modification records.  db.adminCommand( { setParameter : 1,...

SERVER-79010: after we reopen wiredtiger_open, we shold close the old connection

7

after we reopen wiredtiger_open, we shold close the old connection if we not close the old open wiredtiger, There will be a Resource leak.

mongod crash, bug fix when connections > wiredtiger's session_max

3

if user's max connections is greater than wiredtiger's session_max， it will crush. wiredtiger's session_max must great than user's connection.

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...

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...

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

1

// 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}...

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...