Move commit payload propagation 65/76565/1
authorRobert Varga <robert.varga@pantheon.tech>
Tue, 2 Oct 2018 15:20:16 +0000 (17:20 +0200)
committerRobert Varga <robert.varga@pantheon.tech>
Tue, 2 Oct 2018 15:20:16 +0000 (17:20 +0200)
Since Shard.persistPayload() will shortcut when we do not have
a followers or persistence, we must update metadata before we
notify the cohort of the success, as for commit-immediate
transactions that will result in a purge payload being persisted.
That payload will shortcut, too, and execute on stack, hence
metadata will see purge before commit -- leaving it in inconsistent
leaky state.

Move allMetadataCommittedTransaction() calls from
applyReplicatedPayload() down to just after we modify the data
tree and before we invoke listeners.

Change-Id: I1ed2f62756367982cfff08302c79f1c63a871df2
JIRA: CONTROLLER-1746
Signed-off-by: Robert Varga <robert.varga@pantheon.tech>
opendaylight/md-sal/sal-distributed-datastore/src/main/java/org/opendaylight/controller/cluster/datastore/ShardDataTree.java

index c37703c..27a3359 100644 (file)
@@ -365,7 +365,7 @@ public class ShardDataTree extends ShardDataTreeTransactionParent {
         }
     }
 
-    private void applyReplicatedCandidate(final Identifier identifier, final DataTreeCandidate foreign)
+    private void applyReplicatedCandidate(final TransactionIdentifier identifier, final DataTreeCandidate foreign)
             throws DataValidationFailedException {
         LOG.debug("{}: Applying foreign transaction {}", logContext, identifier);
 
@@ -378,6 +378,7 @@ public class ShardDataTree extends ShardDataTreeTransactionParent {
         final DataTreeCandidate candidate = dataTree.prepare(mod);
         dataTree.commit(candidate);
 
+        allMetadataCommittedTransaction(identifier);
         notifyListeners(candidate);
     }
 
@@ -404,18 +405,14 @@ public class ShardDataTree extends ShardDataTreeTransactionParent {
          * pre-Boron state -- which limits the number of options here.
          */
         if (payload instanceof CommitTransactionPayload) {
-            final TransactionIdentifier txId;
             if (identifier == null) {
                 final Entry<TransactionIdentifier, DataTreeCandidate> e =
                         ((CommitTransactionPayload) payload).getCandidate();
-                txId = e.getKey();
-                applyReplicatedCandidate(txId, e.getValue());
+                applyReplicatedCandidate(e.getKey(), e.getValue());
             } else {
                 Verify.verify(identifier instanceof TransactionIdentifier);
-                txId = (TransactionIdentifier) identifier;
-                payloadReplicationComplete(txId);
+                payloadReplicationComplete((TransactionIdentifier) identifier);
             }
-            allMetadataCommittedTransaction(txId);
         } else if (payload instanceof AbortTransactionPayload) {
             if (identifier != null) {
                 payloadReplicationComplete((AbortTransactionPayload) payload);
@@ -467,12 +464,14 @@ public class ShardDataTree extends ShardDataTreeTransactionParent {
         final CommitEntry current = pendingFinishCommits.peek();
         if (current == null) {
             LOG.warn("{}: No outstanding transactions, ignoring consensus on transaction {}", logContext, txId);
+            allMetadataCommittedTransaction(txId);
             return;
         }
 
         if (!current.cohort.getIdentifier().equals(txId)) {
             LOG.debug("{}: Head of pendingFinishCommits queue is {}, ignoring consensus on transaction {}", logContext,
                 current.cohort.getIdentifier(), txId);
+            allMetadataCommittedTransaction(txId);
             return;
         }
 
@@ -972,6 +971,7 @@ public class ShardDataTree extends ShardDataTreeTransactionParent {
             return;
         }
 
+        allMetadataCommittedTransaction(txId);
         shard.getShardMBean().incrementCommittedTransactionCount();
         shard.getShardMBean().setLastCommittedTransactionTime(System.currentTimeMillis());
 

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