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From els...@apache.org
Subject [3/6] git commit: ACCUMULO-2925 Need to preserve replicationSource on the Mutation
Date Fri, 20 Jun 2014 01:25:22 GMT
ACCUMULO-2925 Need to preserve replicationSource on the Mutation

The replicationSource on the Mutation is the information which prevents cycles
in the replication graph from infinitely replicating information. Each replicationSource
on a Mutation is the `replication.name` for a system from which that Mutation came.

We can later use this set to determine if we need to replicate this Mutation
to a given peer by observing if the `replication.name` of our peer already
exists in the replicationSources.


Project: http://git-wip-us.apache.org/repos/asf/accumulo/repo
Commit: http://git-wip-us.apache.org/repos/asf/accumulo/commit/03c93c9d
Tree: http://git-wip-us.apache.org/repos/asf/accumulo/tree/03c93c9d
Diff: http://git-wip-us.apache.org/repos/asf/accumulo/diff/03c93c9d

Branch: refs/heads/master
Commit: 03c93c9dd74abadad027cec6a934c92fd1d58f8c
Parents: b062a0b
Author: Josh Elser <elserj@apache.org>
Authored: Thu Jun 19 14:18:19 2014 -0700
Committer: Josh Elser <elserj@apache.org>
Committed: Thu Jun 19 14:18:19 2014 -0700

----------------------------------------------------------------------
 .../tserver/replication/BatchWriterReplicationReplayer.java | 9 +++++++++
 1 file changed, 9 insertions(+)
----------------------------------------------------------------------


http://git-wip-us.apache.org/repos/asf/accumulo/blob/03c93c9d/server/tserver/src/main/java/org/apache/accumulo/tserver/replication/BatchWriterReplicationReplayer.java
----------------------------------------------------------------------
diff --git a/server/tserver/src/main/java/org/apache/accumulo/tserver/replication/BatchWriterReplicationReplayer.java
b/server/tserver/src/main/java/org/apache/accumulo/tserver/replication/BatchWriterReplicationReplayer.java
index 1d2a529..e9207fb 100644
--- a/server/tserver/src/main/java/org/apache/accumulo/tserver/replication/BatchWriterReplicationReplayer.java
+++ b/server/tserver/src/main/java/org/apache/accumulo/tserver/replication/BatchWriterReplicationReplayer.java
@@ -22,6 +22,7 @@ import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.Set;
 
 import org.apache.accumulo.core.client.BatchWriter;
 import org.apache.accumulo.core.client.BatchWriterConfig;
@@ -114,6 +115,14 @@ public class BatchWriterReplicationReplayer implements AccumuloReplicationReplay
               }
             }
 
+            // We also need to preserve the replicationSource information to prevent cycles
+            Set<String> replicationSources = orig.getReplicationSources();
+            if (null != replicationSources && !replicationSources.isEmpty()) {
+              for (String replicationSource : replicationSources) {
+                copy.addReplicationSource(replicationSource);
+              }
+            }
+
             mutationsCopy.add(copy);
           } else {
             mutationsCopy.add(orig);


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