X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fmd-sal%2Fsal-akka-raft%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fcluster%2Fraft%2Fbehaviors%2FAbstractRaftActorBehavior.java;h=a1bcf8541c4c26b260be916583eb031e29687897;hb=51500b537a2d903acf2794091da8f79cbf082d50;hp=ef5f11e37aef4fe7490887a27d91caedb0e50c51;hpb=09b8efdb40105cd4cd3c21c9a9aea2c6687972be;p=controller.git

diff --git a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/behaviors/AbstractRaftActorBehavior.java b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/behaviors/AbstractRaftActorBehavior.java
index ef5f11e37a..a1bcf8541c 100644
--- a/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/behaviors/AbstractRaftActorBehavior.java
+++ b/opendaylight/md-sal/sal-akka-raft/src/main/java/org/opendaylight/controller/cluster/raft/behaviors/AbstractRaftActorBehavior.java
@@ -464,6 +464,11 @@ public abstract class AbstractRaftActorBehavior implements RaftActorBehavior {
         long lastApplied = context.getLastApplied();
         long tempMin = Math.min(snapshotCapturedIndex, (lastApplied > -1 ? lastApplied - 1 : -1));
 
+        if(LOG.isTraceEnabled()) {
+            LOG.trace("{}: performSnapshotWithoutCapture: snapshotCapturedIndex: {}, lastApplied: {}, tempMin: {}",
+                    logName, snapshotCapturedIndex, lastApplied, tempMin);
+        }
+
         if (tempMin > -1 && context.getReplicatedLog().isPresent(tempMin))  {
             LOG.debug("{}: fakeSnapshot purging log to {} for term {}", logName(), tempMin,
                     context.getTermInformation().getCurrentTerm());
@@ -473,7 +478,18 @@ public abstract class AbstractRaftActorBehavior implements RaftActorBehavior {
             context.getReplicatedLog().snapshotPreCommit(tempMin, entry.getTerm());
             context.getReplicatedLog().snapshotCommit();
             setReplicatedToAllIndex(tempMin);
+        } else if(tempMin > getReplicatedToAllIndex()) {
+            // It's possible a follower was lagging and an install snapshot advanced its match index past
+            // the current replicatedToAllIndex. Since the follower is now caught up we should advance the
+            // replicatedToAllIndex (to tempMin). The fact that tempMin wasn't found in the log is likely
+            // due to a previous snapshot triggered by the memory threshold exceeded, in that case we
+            // trim the log to the last applied index even if previous entries weren't replicated to all followers.
+            setReplicatedToAllIndex(tempMin);
         }
     }
 
+    protected String getId(){
+        return context.getId();
+    }
+
 }