TiDB 3.0.20 released, distributed NewSQL database

TiDB 3.0.20 has been released. The specific updates of this version are as follows:

Compatibility changes

• TiDB

  • Abandoned in the configuration file  enable-streaming Configuration Item  # 21054

Improve

• TiDB

  •  Error message when  optimizing  LOAD DATA statement execution  #21222PREPARE

• TiKV

  • Add  end_point_slow_log_threshold configuration  #9145

Bug fix

• TiDB

  • Fix the problem of incorrectly caching the commit status of pessimistic transactions  #21706
  • Fix INFORMATION_SCHEMA.TIDB_HOT_REGIONS the problem of inaccurate statistics  when querying  #21319
  • Fix a DELETE problem of incorrectly deleted data  caused by improper processing of the case of the database name  #21205
  • Fix the problem of stack overflow when creating a recursive view  #21000
  • Fix the issue of goroutine leak in TiKV client  #20863
  • Fix   the problem of  year type default value  #208280
  • Fix goroutine leak of Index Lookup Join  #20791
  • Fix INSERT SELECT FOR UPDATE the problem that the client receives a malformed packet after  executing in a pessimistic transaction  #20681
  • Fix  'posixrules' the problem of wrong time zone  #20605
  • Fix the error when converting unsigned integer type to bit type  #20362
  • Fix the problem that the default value of the bit column type is wrong  #20339
  • Fix  the problem that the result may be wrong when there is a Enum sum  Settype in the  equivalence condition  #20296
  • != any() Error when  repairing  #20061
  • Fix the problem that the type conversion  BETWEEN...AND... will encounter the wrong result in  #21503
  • Fix  ADDDATE function compatibility issue  #21008
  • Enum Set the correct default value for the newly added  column  #20999
  • Fix  SELECT DATE_ADD('2007-03-28 22:08:28',INTERVAL "-2.-2" SECOND) the result problem of this kind of SQL statement to make it compatible with MySQL  #20627
  • Fix the problem that the default type is set incorrectly when modifying column properties  #20532
  • Fix   the problem that the result is wrong when  timestamp the parameter of the function is  float sum  #20469decimal
  • Fix the problem that statistics information may deadlock  #20424
  • Fix INSERT the problem of  overflowing Float type data  #20251

• TiKV

  • Fix the problem that the key already exists when the transaction deletes the key  #8931

• PD

  • Fix the problem that excessive logs will be printed when starting PD when there are too many stale Regions  #3064

Update instructions: https://docs.pingcap.com/zh/tidb/stable/release-3.0.20