SequoiaDB giant sequoia database-lock related

 

• The snapshot command can view the current node resource scheduling usage, the command is as follows:

  db.snapshot(SDB_SNAP_TRANSACTIONS);

   

• Output example

  {
  ……
  "WaitLock": {
  "CSID": -1,
  "CLID": 65535,
  "recordID": -1,
  "recordOffset": -1
  },
  "TransactionLocksNum": 3,
  "GotLocks": [
  {
    "CSID": 1,
    "CLID": 0,
    "recordID": -1,
    "recordOffset": -1
  }
  ],
  ……
  }

• WaitLock: The transaction is waiting to acquire the lock

• GotLocks: locks held by the transaction

• Lock object content description

  Lock object	CSID	CLID	recordID	recordOffset
  No lock	-1	65535	-1	-1
  Collection space lock	>= 0	65535	-1	-1
  Collection lock	>= 0	>= 0	-1	-1
  Row lock	>= 0	>= 0	>= 0	>= 0

For more information, please visit the official website of Jushan Database