Revert "SERVER-39139 Disallow starting transactions on secondaries"

This reverts commit 58fad7d7efa275beb4a6a83f90d3dd222bbb534b.

1 files changed, 0 insertions, 11 deletions

diff --git a/src/mongo/db/transaction_participant.cpp b/src/mongo/db/transaction_participant.cpp
index 2a7e6817328..2d3127323b8 100644
--- a/src/mongo/db/transaction_participant.cpp
+++ b/src/mongo/db/transaction_participant.cpp
@@ -446,17 +446,6 @@ void TransactionParticipant::Participant::beginOrContinue(OperationContext* opCt
                                                           TxnNumber txnNumber,
                                                           boost::optional<bool> autocommit,
                                                           boost::optional<bool> startTransaction) {
-    // Make sure we are still a primary. We need to hold on to the RSTL through the end of this
-    // method, as we otherwise risk stepping down in the interim and incorrectly updating the
-    // transaction number, which can abort active transactions.
-    Lock::ResourceLock rstl(opCtx->lockState(), resourceIdReplicationStateTransitionLock, MODE_IX);
-    if (opCtx->writesAreReplicated()) {
-        auto replCoord = repl::ReplicationCoordinator::get(opCtx);
-        uassert(ErrorCodes::NotMaster,
-                "Not primary so we cannot begin or continue a transaction",
-                replCoord->canAcceptWritesForDatabase(opCtx, "admin"));
-    }
-
     uassert(ErrorCodes::TransactionTooOld,
             str::stream() << "Cannot start transaction " << txnNumber << " on session "
                           << _sessionId()