DOCS-11897 add total number of committed, aborted, and started transactions to serverStatus

Author: Isabella Siu

source/reference/command/serverStatus.txt

@@ -1452,13 +1452,20 @@ transactions
    "transactions" : {
       "retriedCommandsCount" : <NumberLong>,
       "retriedStatementsCount" : <NumberLong>,
-      "transactionsCollectionWriteCount" : <NumberLong>
+      "transactionsCollectionWriteCount" : <NumberLong>,
+      "currentActive" : <NumberLong>,
+      "currentInactive" : <NumberLong>,
+      "currentOpen" : <NumberLong>,
+      "totalAborted" : <NumberLong>,
+      "totalCommitted" : <NumberLong>,
+      "totalStarted" : <NumberLong>
    },
 
 .. serverstatus:: transactions
 
    A document with data about the :doc:`retryable writes
-   </core/retryable-writes>`.
+   </core/retryable-writes>` and 
+   :doc:`multi-document transactions </core/transactions>`.
 
 .. serverstatus:: transactions.retriedCommandsCount
 
@@ -1513,6 +1520,48 @@ transactions
 
    .. versionadded:: 3.6.3
 
+.. serverstatus:: transactions.currentActive
+
+   The total number of open transactions currently executing a command.
+
+   .. versionadded:: 4.0.2
+
+.. serverstatus:: transactions.currentInactive
+
+   The total number of open transactions that are not currently
+   executing a command.
+
+   .. versionadded:: 4.0.2
+
+.. serverstatus:: transactions.currentOpen
+
+   The total number of open transactions. A transaction is opened when
+   the first command is run as a part of that transaction, and stays
+   open until the transaction either commits or aborts.
+
+   .. versionadded:: 4.0.2
+
+.. serverstatus:: transactions.totalAborted
+
+   The total number of transactions aborted on this server since the
+   :binary:`mongod <bin.mongod>` process's last startup.
+
+   .. versionadded:: 4.0.2
+
+.. serverstatus:: transactions.totalCommitted
+
+   The total number of transactions committed on this server since the
+   :binary:`mongod <bin.mongod>` process's last startup.
+
+   .. versionadded:: 4.0.2
+
+.. serverstatus:: transactions.totalStarted
+
+   The total number of transactions started on this server since the
+   :binary:`mongod <bin.mongod>` process's last startup.
+
+   .. versionadded:: 4.0.2
+
 .. _server-status-wiredTiger:
 
 wiredTiger