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Posted to commits@hbase.apache.org by st...@apache.org on 2017/05/25 06:32:23 UTC

[19/27] hbase git commit: Revert "HBASE-14614 Procedure v2 - Core Assignment Manager (Matteo Bertozzi)" Revert a mistaken commit!!!

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-protocol-shaded/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/generated/SnapshotProtos.java
----------------------------------------------------------------------
diff --git a/hbase-protocol-shaded/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/generated/SnapshotProtos.java b/hbase-protocol-shaded/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/generated/SnapshotProtos.java
index 4d5953c..454e3bc 100644
--- a/hbase-protocol-shaded/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/generated/SnapshotProtos.java
+++ b/hbase-protocol-shaded/src/main/java/org/apache/hadoop/hbase/shaded/protobuf/generated/SnapshotProtos.java
@@ -357,7 +357,7 @@ public final class SnapshotProtos {
       if (ref instanceof java.lang.String) {
         return (java.lang.String) ref;
       } else {
-        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString bs = 
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString bs =
             (org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString) ref;
         java.lang.String s = bs.toStringUtf8();
         if (bs.isValidUtf8()) {
@@ -373,7 +373,7 @@ public final class SnapshotProtos {
         getNameBytes() {
       java.lang.Object ref = name_;
       if (ref instanceof java.lang.String) {
-        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString b = 
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString b =
             org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString.copyFromUtf8(
                 (java.lang.String) ref);
         name_ = b;
@@ -407,7 +407,7 @@ public final class SnapshotProtos {
       if (ref instanceof java.lang.String) {
         return (java.lang.String) ref;
       } else {
-        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString bs = 
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString bs =
             (org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString) ref;
         java.lang.String s = bs.toStringUtf8();
         if (bs.isValidUtf8()) {
@@ -427,7 +427,7 @@ public final class SnapshotProtos {
         getTableBytes() {
       java.lang.Object ref = table_;
       if (ref instanceof java.lang.String) {
-        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString b = 
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString b =
             org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString.copyFromUtf8(
                 (java.lang.String) ref);
         table_ = b;
@@ -499,7 +499,7 @@ public final class SnapshotProtos {
       if (ref instanceof java.lang.String) {
         return (java.lang.String) ref;
       } else {
-        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString bs = 
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString bs =
             (org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString) ref;
         java.lang.String s = bs.toStringUtf8();
         if (bs.isValidUtf8()) {
@@ -515,7 +515,7 @@ public final class SnapshotProtos {
         getOwnerBytes() {
       java.lang.Object ref = owner_;
       if (ref instanceof java.lang.String) {
-        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString b = 
+        org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString b =
             org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString.copyFromUtf8(
                 (java.lang.String) ref);
         owner_ = b;
@@ -1047,7 +1047,7 @@ public final class SnapshotProtos {
           getNameBytes() {
         java.lang.Object ref = name_;
         if (ref instanceof String) {
-          org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString b = 
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString b =
               org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString.copyFromUtf8(
                   (java.lang.String) ref);
           name_ = b;
@@ -1135,7 +1135,7 @@ public final class SnapshotProtos {
           getTableBytes() {
         java.lang.Object ref = table_;
         if (ref instanceof String) {
-          org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString b = 
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString b =
               org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString.copyFromUtf8(
                   (java.lang.String) ref);
           table_ = b;
@@ -1323,7 +1323,7 @@ public final class SnapshotProtos {
           getOwnerBytes() {
         java.lang.Object ref = owner_;
         if (ref instanceof String) {
-          org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString b = 
+          org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString b =
               org.apache.hadoop.hbase.shaded.com.google.protobuf.ByteString.copyFromUtf8(
                   (java.lang.String) ref);
           owner_ = b;
@@ -1473,7 +1473,7 @@ public final class SnapshotProtos {
        * <code>optional .hbase.pb.UsersAndPermissions users_and_permissions = 7;</code>
        */
       private org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
-          org.apache.hadoop.hbase.shaded.protobuf.generated.AccessControlProtos.UsersAndPermissions, org.apache.hadoop.hbase.shaded.protobuf.generated.AccessControlProtos.UsersAndPermissions.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.AccessControlProtos.UsersAndPermissionsOrBuilder> 
+          org.apache.hadoop.hbase.shaded.protobuf.generated.AccessControlProtos.UsersAndPermissions, org.apache.hadoop.hbase.shaded.protobuf.generated.AccessControlProtos.UsersAndPermissions.Builder, org.apache.hadoop.hbase.shaded.protobuf.generated.AccessControlProtos.UsersAndPermissionsOrBuilder>
           getUsersAndPermissionsFieldBuilder() {
         if (usersAndPermissionsBuilder_ == null) {
           usersAndPermissionsBuilder_ = new org.apache.hadoop.hbase.shaded.com.google.protobuf.SingleFieldBuilderV3<
@@ -6366,7 +6366,7 @@ public final class SnapshotProtos {
 
   private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor
     internal_static_hbase_pb_SnapshotDescription_descriptor;
-  private static final 
+  private static final
     org.apache.hadoop.hbase.shaded.com.google.protobuf.GeneratedMessageV3.FieldAccessorTable
       internal_static_hbase_pb_SnapshotDescription_fieldAccessorTable;
   private static final org.apache.hadoop.hbase.shaded.com.google.protobuf.Descriptors.Descriptor

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-protocol-shaded/src/main/protobuf/Admin.proto
----------------------------------------------------------------------
diff --git a/hbase-protocol-shaded/src/main/protobuf/Admin.proto b/hbase-protocol-shaded/src/main/protobuf/Admin.proto
index fe95fd5..39e73b6 100644
--- a/hbase-protocol-shaded/src/main/protobuf/Admin.proto
+++ b/hbase-protocol-shaded/src/main/protobuf/Admin.proto
@@ -39,10 +39,6 @@ message GetRegionInfoResponse {
   required RegionInfo region_info = 1;
   optional CompactionState compaction_state = 2;
   optional bool isRecovering = 3;
-  // True if region is splittable, false otherwise.
-  optional bool splittable = 4;
-  // True if region is mergeable, false otherwise.
-  optional bool mergeable = 5;
 
   enum CompactionState {
     NONE = 0;
@@ -124,6 +120,18 @@ message CloseRegionResponse {
 }
 
 /**
+ * Closes the specified region(s) for
+ * split or merge
+ */
+message CloseRegionForSplitOrMergeRequest {
+  repeated RegionSpecifier region = 1;
+}
+
+message CloseRegionForSplitOrMergeResponse {
+  required bool closed = 1;
+}
+
+/**
  * Flushes the MemStore of the specified region.
  * <p>
  * This method is synchronous.
@@ -260,32 +268,6 @@ message ClearCompactionQueuesRequest {
 message ClearCompactionQueuesResponse {
 }
 
-message ExecuteProceduresRequest {
-  repeated OpenRegionRequest open_region = 1;
-  repeated CloseRegionRequest close_region = 2;
-}
-
-message ExecuteProceduresResponse {
-  repeated OpenRegionResponse open_region = 1;
-  repeated CloseRegionResponse close_region = 2;
-}
-
-/**
- * Merges the specified regions.
- * <p>
- * This method currently closes the regions and then merges them
- */
-message MergeRegionsRequest {
-  required RegionSpecifier region_a = 1;
-  required RegionSpecifier region_b = 2;
-  optional bool forcible = 3 [default = false];
-  // wall clock time from master
-  optional uint64 master_system_time = 4;
-}
-
-message MergeRegionsResponse {
-}
-
 service AdminService {
   rpc GetRegionInfo(GetRegionInfoRequest)
     returns(GetRegionInfoResponse);
@@ -305,6 +287,9 @@ service AdminService {
   rpc CloseRegion(CloseRegionRequest)
     returns(CloseRegionResponse);
 
+  rpc CloseRegionForSplitOrMerge(CloseRegionForSplitOrMergeRequest)
+    returns(CloseRegionForSplitOrMergeResponse);
+
   rpc FlushRegion(FlushRegionRequest)
     returns(FlushRegionResponse);
 
@@ -344,10 +329,4 @@ service AdminService {
   /** Fetches the RegionServer's view of space quotas */
   rpc GetSpaceQuotaSnapshots(GetSpaceQuotaSnapshotsRequest)
     returns(GetSpaceQuotaSnapshotsResponse);
-
-  rpc ExecuteProcedures(ExecuteProceduresRequest)
-    returns(ExecuteProceduresResponse);
-
-  rpc MergeRegions(MergeRegionsRequest)
-    returns(MergeRegionsResponse);
 }

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-protocol-shaded/src/main/protobuf/Master.proto
----------------------------------------------------------------------
diff --git a/hbase-protocol-shaded/src/main/protobuf/Master.proto b/hbase-protocol-shaded/src/main/protobuf/Master.proto
index 7015fcb..3d6ae1b 100644
--- a/hbase-protocol-shaded/src/main/protobuf/Master.proto
+++ b/hbase-protocol-shaded/src/main/protobuf/Master.proto
@@ -81,21 +81,6 @@ message MoveRegionRequest {
 message MoveRegionResponse {
 }
 
- /**
- * Dispatch merging the specified regions.
- */
-message DispatchMergingRegionsRequest {
-  required RegionSpecifier region_a = 1;
-  required RegionSpecifier region_b = 2;
-  optional bool forcible = 3 [default = false];
-  optional uint64 nonce_group = 4 [default = 0];
-  optional uint64 nonce = 5 [default = 0];
-}
-
-message DispatchMergingRegionsResponse {
-  optional uint64 proc_id = 1;
-}
-
 /**
  * Merging the specified regions in a table.
  */
@@ -134,17 +119,6 @@ message OfflineRegionResponse {
 
 /* Table-level protobufs */
 
-message SplitTableRegionRequest {
-  required RegionInfo region_info = 1;
-  required bytes split_row = 2;
-  optional uint64 nonce_group = 3 [default = 0];
-  optional uint64 nonce = 4 [default = 0];
-}
-
-message SplitTableRegionResponse {
-  optional uint64 proc_id = 1;
-}
-
 message CreateTableRequest {
   required TableSchema table_schema = 1;
   repeated bytes split_keys = 2;
@@ -366,7 +340,6 @@ message RunCatalogScanRequest {
 }
 
 message RunCatalogScanResponse {
-  // This is how many archiving tasks we started as a result of this scan.
   optional int32 scan_result = 1;
 }
 
@@ -667,10 +640,6 @@ service MasterService {
   rpc ModifyColumn(ModifyColumnRequest)
     returns(ModifyColumnResponse);
 
- /** Master dispatch merging the regions */
-  rpc DispatchMergingRegions(DispatchMergingRegionsRequest)
-    returns(DispatchMergingRegionsResponse);
-
   /** Move the region region to the destination server. */
   rpc MoveRegion(MoveRegionRequest)
     returns(MoveRegionResponse);
@@ -701,12 +670,6 @@ service MasterService {
   rpc OfflineRegion(OfflineRegionRequest)
     returns(OfflineRegionResponse);
 
-  /**
-   * Split region
-   */
-  rpc SplitRegion(SplitTableRegionRequest)
-    returns(SplitTableRegionResponse);
-
   /** Deletes a table */
   rpc DeleteTable(DeleteTableRequest)
     returns(DeleteTableResponse);

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-protocol-shaded/src/main/protobuf/MasterProcedure.proto
----------------------------------------------------------------------
diff --git a/hbase-protocol-shaded/src/main/protobuf/MasterProcedure.proto b/hbase-protocol-shaded/src/main/protobuf/MasterProcedure.proto
index 14d6d56..2c70882 100644
--- a/hbase-protocol-shaded/src/main/protobuf/MasterProcedure.proto
+++ b/hbase-protocol-shaded/src/main/protobuf/MasterProcedure.proto
@@ -265,31 +265,38 @@ message RestoreSnapshotStateData {
   repeated RestoreParentToChildRegionsPair parent_to_child_regions_pair_list = 7;
 }
 
-enum DispatchMergingRegionsState {
-  DISPATCH_MERGING_REGIONS_PREPARE = 1;
-  DISPATCH_MERGING_REGIONS_PRE_OPERATION = 2;
-  DISPATCH_MERGING_REGIONS_MOVE_REGION_TO_SAME_RS = 3;
-  DISPATCH_MERGING_REGIONS_DO_MERGE_IN_RS = 4;
-  DISPATCH_MERGING_REGIONS_POST_OPERATION = 5;
+enum MergeTableRegionsState {
+  MERGE_TABLE_REGIONS_PREPARE = 1;
+  MERGE_TABLE_REGIONS_MOVE_REGION_TO_SAME_RS = 2;
+  MERGE_TABLE_REGIONS_PRE_MERGE_OPERATION = 3;
+  MERGE_TABLE_REGIONS_SET_MERGING_TABLE_STATE = 4;
+  MERGE_TABLE_REGIONS_CLOSE_REGIONS = 5;
+  MERGE_TABLE_REGIONS_CREATE_MERGED_REGION = 6;
+  MERGE_TABLE_REGIONS_PRE_MERGE_COMMIT_OPERATION = 7;
+  MERGE_TABLE_REGIONS_UPDATE_META = 8;
+  MERGE_TABLE_REGIONS_POST_MERGE_COMMIT_OPERATION = 9;
+  MERGE_TABLE_REGIONS_OPEN_MERGED_REGION = 10;
+  MERGE_TABLE_REGIONS_POST_OPERATION = 11;
 }
 
-message DispatchMergingRegionsStateData {
+message MergeTableRegionsStateData {
   required UserInformation user_info = 1;
-  required TableName table_name = 2;
-  repeated RegionInfo region_info = 3;
-  optional bool forcible = 4;
+  repeated RegionInfo region_info = 2;
+  required RegionInfo merged_region_info = 3;
+  optional bool forcible = 4 [default = false];
 }
 
 enum SplitTableRegionState {
   SPLIT_TABLE_REGION_PREPARE = 1;
   SPLIT_TABLE_REGION_PRE_OPERATION = 2;
-  SPLIT_TABLE_REGION_CLOSE_PARENT_REGION = 3;
-  SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS = 4;
-  SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_PONR = 5;
-  SPLIT_TABLE_REGION_UPDATE_META = 6;
-  SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_PONR = 7;
-  SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS = 8;
-  SPLIT_TABLE_REGION_POST_OPERATION = 9;
+  SPLIT_TABLE_REGION_SET_SPLITTING_TABLE_STATE = 3;
+  SPLIT_TABLE_REGION_CLOSE_PARENT_REGION = 4;
+  SPLIT_TABLE_REGION_CREATE_DAUGHTER_REGIONS = 5;
+  SPLIT_TABLE_REGION_PRE_OPERATION_BEFORE_PONR = 6;
+  SPLIT_TABLE_REGION_UPDATE_META = 7;
+  SPLIT_TABLE_REGION_PRE_OPERATION_AFTER_PONR = 8;
+  SPLIT_TABLE_REGION_OPEN_CHILD_REGIONS = 9;
+  SPLIT_TABLE_REGION_POST_OPERATION = 10;
 }
 
 message SplitTableRegionStateData {
@@ -298,29 +305,6 @@ message SplitTableRegionStateData {
   repeated RegionInfo child_region_info = 3;
 }
 
-enum MergeTableRegionsState {
-  MERGE_TABLE_REGIONS_PREPARE = 1;
-  MERGE_TABLE_REGIONS_PRE_OPERATION = 2;
-  MERGE_TABLE_REGIONS_MOVE_REGION_TO_SAME_RS = 3;
-  MERGE_TABLE_REGIONS_PRE_MERGE_OPERATION = 4;
-  MERGE_TABLE_REGIONS_SET_MERGING_TABLE_STATE = 5;
-  MERGE_TABLE_REGIONS_CLOSE_REGIONS = 6;
-  MERGE_TABLE_REGIONS_CREATE_MERGED_REGION = 7;
-  MERGE_TABLE_REGIONS_PRE_MERGE_COMMIT_OPERATION = 8;
-  MERGE_TABLE_REGIONS_UPDATE_META = 9;
-  MERGE_TABLE_REGIONS_POST_MERGE_COMMIT_OPERATION = 10;
-  MERGE_TABLE_REGIONS_OPEN_MERGED_REGION = 11;
-  MERGE_TABLE_REGIONS_POST_OPERATION = 12;
-}
-
-message MergeTableRegionsStateData {
-  required UserInformation user_info = 1;
-  repeated RegionInfo region_info = 2;
-  optional RegionInfo merged_region_info = 3;
-  optional bool forcible = 4 [default = false];
-}
-
-
 message ServerCrashStateData {
   required ServerName server_name = 1;
   optional bool distributed_log_replay = 2;
@@ -342,56 +326,3 @@ enum ServerCrashState {
   SERVER_CRASH_WAIT_ON_ASSIGN = 9;
   SERVER_CRASH_FINISH = 100;
 }
-
-enum RegionTransitionState {
-  REGION_TRANSITION_QUEUE = 1;
-  REGION_TRANSITION_DISPATCH = 2;
-  REGION_TRANSITION_FINISH = 3;
-}
-
-message AssignRegionStateData {
-  required RegionTransitionState transition_state = 1;
-  required RegionInfo region_info = 2;
-  optional bool force_new_plan = 3 [default = false];
-  optional ServerName target_server = 4;
-}
-
-message UnassignRegionStateData {
-  required RegionTransitionState transition_state = 1;
-  required RegionInfo region_info = 2;
-  optional ServerName destination_server = 3;
-  optional bool force = 4 [default = false];
-}
-
-enum MoveRegionState {
-  MOVE_REGION_UNASSIGN = 1;
-  MOVE_REGION_ASSIGN = 2;
-}
-
-message MoveRegionStateData {
-  optional RegionInfo region_info = 1;
-  required ServerName source_server = 2;
-  required ServerName destination_server = 3;
-}
-
-enum GCRegionState {
-  GC_REGION_PREPARE = 1;
-  GC_REGION_ARCHIVE = 2;
-  GC_REGION_PURGE_METADATA = 3;
-}
-
-message GCRegionStateData {
-  required RegionInfo region_info = 1;
-}
-
-enum GCMergedRegionsState {
-  GC_MERGED_REGIONS_PREPARE = 1;
-  GC_MERGED_REGIONS_PURGE = 2;
-  GC_REGION_EDIT_METADATA = 3;
-}
-
-message GCMergedRegionsStateData {
-  required RegionInfo parent_a = 1;
-  required RegionInfo parent_b = 2;
-  required RegionInfo merged_child = 3;
-}

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-protocol-shaded/src/main/protobuf/RegionServerStatus.proto
----------------------------------------------------------------------
diff --git a/hbase-protocol-shaded/src/main/protobuf/RegionServerStatus.proto b/hbase-protocol-shaded/src/main/protobuf/RegionServerStatus.proto
index 7d35df0..0b765d6 100644
--- a/hbase-protocol-shaded/src/main/protobuf/RegionServerStatus.proto
+++ b/hbase-protocol-shaded/src/main/protobuf/RegionServerStatus.proto
@@ -26,6 +26,7 @@ option java_generate_equals_and_hash = true;
 option optimize_for = SPEED;
 
 import "HBase.proto";
+import "Master.proto";
 import "ClusterStatus.proto";
 
 message RegionServerStartupRequest {
@@ -126,6 +127,19 @@ message ReportRegionStateTransitionResponse {
   optional string error_message = 1;
 }
 
+/**
+ * Splits the specified region.
+ */
+message SplitTableRegionRequest {
+  required RegionInfo region_info = 1;
+  required bytes split_row = 2;
+  optional uint64 nonce_group = 3 [default = 0];
+  optional uint64 nonce = 4 [default = 0];
+}
+
+message SplitTableRegionResponse {
+  optional uint64 proc_id = 1;
+}
 
 message RegionSpaceUse {
   optional RegionInfo region_info = 1; // A region identifier
@@ -174,6 +188,18 @@ service RegionServerStatusService {
     returns(ReportRegionStateTransitionResponse);
 
   /**
+   * Split region
+   */
+  rpc SplitRegion(SplitTableRegionRequest)
+    returns(SplitTableRegionResponse);
+
+  /**
+   * Get procedure result
+   */
+  rpc getProcedureResult(GetProcedureResultRequest)
+    returns(GetProcedureResultResponse);
+
+  /**
    * Reports Region filesystem space use
    */
   rpc ReportRegionSpaceUse(RegionSpaceUseReportRequest)

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java
----------------------------------------------------------------------
diff --git a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java
index 430c8fc..718c7c1 100644
--- a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java
+++ b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupAdminServer.java
@@ -37,9 +37,8 @@ import org.apache.hadoop.hbase.ServerName;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.constraint.ConstraintException;
+import org.apache.hadoop.hbase.master.AssignmentManager;
 import org.apache.hadoop.hbase.master.HMaster;
-import org.apache.hadoop.hbase.master.assignment.AssignmentManager;
-import org.apache.hadoop.hbase.master.assignment.RegionStates.RegionStateNode;
 import org.apache.hadoop.hbase.master.LoadBalancer;
 import org.apache.hadoop.hbase.master.MasterServices;
 import org.apache.hadoop.hbase.master.RegionPlan;
@@ -119,14 +118,14 @@ public class RSGroupAdminServer implements RSGroupAdmin {
     LinkedList<HRegionInfo> regions = new LinkedList<>();
     for (Map.Entry<HRegionInfo, ServerName> el :
         master.getAssignmentManager().getRegionStates().getRegionAssignments().entrySet()) {
-      if (el.getValue() == null) continue;
       if (el.getValue().getAddress().equals(server)) {
         addRegion(regions, el.getKey());
       }
     }
-    for (RegionStateNode state : master.getAssignmentManager().getRegionsInTransition()) {
-      if (state.getRegionLocation().getAddress().equals(server)) {
-        addRegion(regions, state.getRegionInfo());
+    for (RegionState state:
+        this.master.getAssignmentManager().getRegionStates().getRegionsInTransition()) {
+      if (state.getServerName().getAddress().equals(server)) {
+        addRegion(regions, state.getRegion());
       }
     }
     return regions;
@@ -535,7 +534,7 @@ public class RSGroupAdminServer implements RSGroupAdmin {
         LOG.info("RSGroup balance " + groupName + " starting with plan count: " + plans.size());
         for (RegionPlan plan: plans) {
           LOG.info("balance " + plan);
-          assignmentManager.moveAsync(plan);
+          assignmentManager.balance(plan);
         }
         LOG.info("RSGroup balance " + groupName + " completed after " +
             (System.currentTimeMillis()-startTime) + " seconds");

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.java
----------------------------------------------------------------------
diff --git a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.java b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.java
index e2dd91c..5cdfad2 100644
--- a/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.java
+++ b/hbase-rsgroup/src/main/java/org/apache/hadoop/hbase/rsgroup/RSGroupBasedLoadBalancer.java
@@ -318,8 +318,7 @@ public class RSGroupBasedLoadBalancer implements RSGroupableBalancer {
   }
 
   private Map<ServerName, List<HRegionInfo>> correctAssignments(
-       Map<ServerName, List<HRegionInfo>> existingAssignments)
-  throws HBaseIOException{
+       Map<ServerName, List<HRegionInfo>> existingAssignments){
     Map<ServerName, List<HRegionInfo>> correctAssignments = new TreeMap<>();
     List<HRegionInfo> misplacedRegions = new LinkedList<>();
     correctAssignments.put(LoadBalancer.BOGUS_SERVER_NAME, new LinkedList<>());
@@ -347,11 +346,7 @@ public class RSGroupBasedLoadBalancer implements RSGroupableBalancer {
     //TODO bulk unassign?
     //unassign misplaced regions, so that they are assigned to correct groups.
     for(HRegionInfo info: misplacedRegions) {
-      try {
-        this.masterServices.getAssignmentManager().unassign(info);
-      } catch (IOException e) {
-        throw new HBaseIOException(e);
-      }
+      this.masterServices.getAssignmentManager().unassign(info);
     }
     return correctAssignments;
   }

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/master/balancer/TestRSGroupBasedLoadBalancer.java
----------------------------------------------------------------------
diff --git a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/master/balancer/TestRSGroupBasedLoadBalancer.java b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/master/balancer/TestRSGroupBasedLoadBalancer.java
index 0f1e849..83fe122 100644
--- a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/master/balancer/TestRSGroupBasedLoadBalancer.java
+++ b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/master/balancer/TestRSGroupBasedLoadBalancer.java
@@ -32,7 +32,7 @@ import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.rsgroup.RSGroupBasedLoadBalancer;
 import org.apache.hadoop.hbase.rsgroup.RSGroupInfo;
 import org.apache.hadoop.hbase.rsgroup.RSGroupInfoManager;
-import org.apache.hadoop.hbase.master.assignment.AssignmentManager;
+import org.apache.hadoop.hbase.master.AssignmentManager;
 import org.apache.hadoop.hbase.master.HMaster;
 import org.apache.hadoop.hbase.master.MasterServices;
 import org.apache.hadoop.hbase.master.RegionPlan;

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroups.java
----------------------------------------------------------------------
diff --git a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroups.java b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroups.java
index 264ea39..ae1485c 100644
--- a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroups.java
+++ b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroups.java
@@ -51,13 +51,11 @@ import org.junit.AfterClass;
 import org.junit.Assert;
 import org.junit.Before;
 import org.junit.BeforeClass;
-import org.junit.Ignore;
 import org.junit.Test;
 import org.junit.experimental.categories.Category;
 
 import com.google.common.collect.Sets;
 
-@Ignore // TODO: Fix after HBASE-14614 goes in.
 @Category({MediumTests.class})
 public class TestRSGroups extends TestRSGroupsBase {
   protected static final Log LOG = LogFactory.getLog(TestRSGroups.class);
@@ -149,7 +147,7 @@ public class TestRSGroups extends TestRSGroupsBase {
     });
   }
 
-  @Ignore @Test
+  @Test
   public void testBasicStartUp() throws IOException {
     RSGroupInfo defaultInfo = rsGroupAdmin.getRSGroupInfo(RSGroupInfo.DEFAULT_GROUP);
     assertEquals(4, defaultInfo.getServers().size());
@@ -159,7 +157,7 @@ public class TestRSGroups extends TestRSGroupsBase {
     assertEquals(3, count);
   }
 
-  @Ignore @Test
+  @Test
   public void testNamespaceCreateAndAssign() throws Exception {
     LOG.info("testNamespaceCreateAndAssign");
     String nsName = tablePrefix+"_foo";
@@ -185,7 +183,7 @@ public class TestRSGroups extends TestRSGroupsBase {
     Assert.assertEquals(1, ProtobufUtil.getOnlineRegions(rs).size());
   }
 
-  @Ignore @Test
+  @Test
   public void testDefaultNamespaceCreateAndAssign() throws Exception {
     LOG.info("testDefaultNamespaceCreateAndAssign");
     final byte[] tableName = Bytes.toBytes(tablePrefix + "_testCreateAndAssign");
@@ -203,7 +201,7 @@ public class TestRSGroups extends TestRSGroupsBase {
     });
   }
 
-  @Ignore @Test
+  @Test
   public void testNamespaceConstraint() throws Exception {
     String nsName = tablePrefix+"_foo";
     String groupName = tablePrefix+"_foo";
@@ -238,7 +236,7 @@ public class TestRSGroups extends TestRSGroupsBase {
     }
   }
 
-  @Ignore @Test
+  @Test
   public void testGroupInfoMultiAccessing() throws Exception {
     RSGroupInfoManager manager = rsGroupAdminEndpoint.getGroupInfoManager();
     RSGroupInfo defaultGroup = manager.getRSGroup("default");
@@ -249,7 +247,7 @@ public class TestRSGroups extends TestRSGroupsBase {
     it.next();
   }
 
-  @Ignore @Test
+  @Test
   public void testMisplacedRegions() throws Exception {
     final TableName tableName = TableName.valueOf(tablePrefix+"_testMisplacedRegions");
     LOG.info("testMisplacedRegions");
@@ -277,7 +275,7 @@ public class TestRSGroups extends TestRSGroupsBase {
     });
   }
 
-  @Ignore @Test
+  @Test
   public void testCloneSnapshot() throws Exception {
     byte[] FAMILY = Bytes.toBytes("test");
     String snapshotName = tableName.getNameAsString() + "_snap";

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsOfflineMode.java
----------------------------------------------------------------------
diff --git a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsOfflineMode.java b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsOfflineMode.java
index 8b200ab..4802ca4 100644
--- a/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsOfflineMode.java
+++ b/hbase-rsgroup/src/test/java/org/apache/hadoop/hbase/rsgroup/TestRSGroupsOfflineMode.java
@@ -37,7 +37,6 @@ import org.apache.hadoop.hbase.util.Bytes;
 import org.junit.AfterClass;
 import org.junit.Assert;
 import org.junit.BeforeClass;
-import org.junit.Ignore;
 import org.junit.Rule;
 import org.junit.Test;
 import org.junit.experimental.categories.Category;
@@ -99,7 +98,7 @@ public class TestRSGroupsOfflineMode {
     TEST_UTIL.shutdownMiniCluster();
   }
 
-  @Ignore @Test
+  @Test
   public void testOffline() throws Exception, InterruptedException {
     // Table should be after group table name so it gets assigned later.
     final TableName failoverTable = TableName.valueOf(name.getMethodName());

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/AssignmentManagerStatusTmpl.jamon
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/AssignmentManagerStatusTmpl.jamon b/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/AssignmentManagerStatusTmpl.jamon
index b5e6dd0..76a85a9 100644
--- a/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/AssignmentManagerStatusTmpl.jamon
+++ b/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/AssignmentManagerStatusTmpl.jamon
@@ -18,9 +18,7 @@ limitations under the License.
 </%doc>
 <%import>
 org.apache.hadoop.hbase.HRegionInfo;
-org.apache.hadoop.hbase.master.assignment.AssignmentManager;
-org.apache.hadoop.hbase.master.assignment.AssignmentManager.RegionInTransitionStat;
-org.apache.hadoop.hbase.master.assignment.RegionStates.RegionFailedOpen;
+org.apache.hadoop.hbase.master.AssignmentManager;
 org.apache.hadoop.hbase.master.RegionState;
 org.apache.hadoop.conf.Configuration;
 org.apache.hadoop.hbase.HBaseConfiguration;
@@ -37,12 +35,28 @@ int limit = 100;
 
 <%java SortedSet<RegionState> rit = assignmentManager
   .getRegionStates().getRegionsInTransitionOrderedByTimestamp();
-%>
+  Map<String, AtomicInteger> failedRegionTracker = assignmentManager.getFailedOpenTracker();
+   %>
 
 <%if !rit.isEmpty() %>
 <%java>
+HashSet<String> ritsOverThreshold = new HashSet<String>();
+HashSet<String> ritsTwiceThreshold = new HashSet<String>();
+// process the map to find region in transition details
+Configuration conf = HBaseConfiguration.create();
+int ritThreshold = conf.getInt(HConstants.METRICS_RIT_STUCK_WARNING_THRESHOLD, 60000);
+int numOfRITOverThreshold = 0;
 long currentTime = System.currentTimeMillis();
-RegionInTransitionStat ritStat = assignmentManager.computeRegionInTransitionStat();
+for (RegionState rs : rit) {
+  long ritTime = currentTime - rs.getStamp();
+  if(ritTime > (ritThreshold * 2)) {
+     numOfRITOverThreshold++;
+     ritsTwiceThreshold.add(rs.getRegion().getEncodedName());
+  } else if (ritTime > ritThreshold) {
+     numOfRITOverThreshold++;
+     ritsOverThreshold.add(rs.getRegion().getEncodedName());
+  }
+}
 
 int numOfRITs = rit.size();
 int ritsPerPage = Math.min(5, numOfRITs);
@@ -51,15 +65,15 @@ int numOfPages = (int) Math.ceil(numOfRITs * 1.0 / ritsPerPage);
     <section>
     <h2>Regions in Transition</h2>
      <p><% numOfRITs %> region(s) in transition.
-     <%if ritStat.hasRegionsTwiceOverThreshold()  %>
+     <%if !ritsTwiceThreshold.isEmpty()  %>
          <span class="label label-danger" style="font-size:100%;font-weight:normal">
-     <%elseif ritStat.hasRegionsOverThreshold() %>
+     <%elseif !ritsOverThreshold.isEmpty() %>
          <span class="label label-warning" style="font-size:100%;font-weight:normal">
      <%else>
          <span>
      </%if>
-         <% ritStat.getTotalRITsOverThreshold() %> region(s) in transition for
-             more than <% ritStat.getRITThreshold() %> milliseconds.
+         <% numOfRITOverThreshold %> region(s) in transition for
+             more than <% ritThreshold %> milliseconds.
          </span>
      </p>
      <div class="tabbable">
@@ -76,26 +90,25 @@ int numOfPages = (int) Math.ceil(numOfRITs * 1.0 / ritsPerPage);
                      <th>State</th><th>RIT time (ms)</th> <th>Retries </th></tr>
              </%if>
 
-             <%if ritStat.isRegionTwiceOverThreshold(rs.getRegion()) %>
-                     <tr class="alert alert-danger" role="alert">
-             <%elseif ritStat.isRegionOverThreshold(rs.getRegion()) %>
+             <%if ritsOverThreshold.contains(rs.getRegion().getEncodedName()) %>
                      <tr class="alert alert-warning" role="alert">
+             <%elseif ritsTwiceThreshold.contains(rs.getRegion().getEncodedName()) %>
+                     <tr class="alert alert-danger" role="alert">
             <%else>
                     <tr>
             </%if>
                         <%java>
                           String retryStatus = "0";
-                          RegionFailedOpen regionFailedOpen = assignmentManager
-                            .getRegionStates().getFailedOpen(rs.getRegion());
-                          if (regionFailedOpen != null) {
-                            retryStatus = Integer.toString(regionFailedOpen.getRetries());
+                          AtomicInteger numOpenRetries = failedRegionTracker.get(
+                              rs.getRegion().getEncodedName());
+                          if (numOpenRetries != null ) {
+                            retryStatus = Integer.toString(numOpenRetries.get());
                           } else if (rs.getState() ==  RegionState.State.FAILED_OPEN) {
-                            retryStatus = "Failed";
+                             retryStatus = "Failed";
                           }
                         </%java>
                         <td><% rs.getRegion().getEncodedName() %></td><td>
-                        <% HRegionInfo.getDescriptiveNameFromRegionStateForDisplay(rs,
-                            assignmentManager.getConfiguration()) %></td>
+                        <% HRegionInfo.getDescriptiveNameFromRegionStateForDisplay(rs, conf) %></td>
                         <td><% (currentTime - rs.getStamp()) %> </td>
                         <td> <% retryStatus %> </td>
                      </tr>

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/MasterStatusTmpl.jamon
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/MasterStatusTmpl.jamon b/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/MasterStatusTmpl.jamon
index 14dfe0a..e1a47c5 100644
--- a/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/MasterStatusTmpl.jamon
+++ b/hbase-server/src/main/jamon/org/apache/hadoop/hbase/tmpl/master/MasterStatusTmpl.jamon
@@ -41,7 +41,7 @@ org.apache.hadoop.hbase.TableName;
 org.apache.hadoop.hbase.client.Admin;
 org.apache.hadoop.hbase.client.MasterSwitchType;
 org.apache.hadoop.hbase.client.SnapshotDescription;
-org.apache.hadoop.hbase.master.assignment.AssignmentManager;
+org.apache.hadoop.hbase.master.AssignmentManager;
 org.apache.hadoop.hbase.master.DeadServer;
 org.apache.hadoop.hbase.master.HMaster;
 org.apache.hadoop.hbase.master.RegionState;

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-server/src/main/java/org/apache/hadoop/hbase/RegionStateListener.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/RegionStateListener.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/RegionStateListener.java
index 011ed1c..22725ec 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/RegionStateListener.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/RegionStateListener.java
@@ -26,8 +26,7 @@ import org.apache.hadoop.hbase.classification.InterfaceAudience;
  */
 @InterfaceAudience.Private
 public interface RegionStateListener {
-// TODO: Get rid of this!!!! Ain't there a better way to watch region
-// state than introduce a whole new listening mechanism? St.Ack
+
   /**
    * Process region split event.
    *
@@ -46,7 +45,9 @@ public interface RegionStateListener {
 
   /**
    * Process region merge event.
+   *
+   * @param hri An instance of HRegionInfo
    * @throws IOException
    */
-  void onRegionMerged(HRegionInfo mergedRegion) throws IOException;
+  void onRegionMerged(HRegionInfo hri) throws IOException;
 }

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-server/src/main/java/org/apache/hadoop/hbase/SplitLogTask.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/SplitLogTask.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/SplitLogTask.java
index 3fef686..3ecaa86 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/SplitLogTask.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/SplitLogTask.java
@@ -46,10 +46,6 @@ public class SplitLogTask {
   }
 
   public static class Owned extends SplitLogTask {
-    public Owned(final ServerName originServer) {
-      this(originServer, ZooKeeperProtos.SplitLogTask.RecoveryMode.LOG_SPLITTING);
-    }
- 
     public Owned(final ServerName originServer, final RecoveryMode mode) {
       super(originServer, ZooKeeperProtos.SplitLogTask.State.OWNED, mode);
     }

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-server/src/main/java/org/apache/hadoop/hbase/backup/HFileArchiver.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/backup/HFileArchiver.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/backup/HFileArchiver.java
index b9f52b8..ecd4401 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/backup/HFileArchiver.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/backup/HFileArchiver.java
@@ -32,6 +32,7 @@ import org.apache.hadoop.fs.FileStatus;
 import org.apache.hadoop.fs.FileSystem;
 import org.apache.hadoop.fs.Path;
 import org.apache.hadoop.fs.PathFilter;
+import org.apache.hadoop.hbase.HBaseInterfaceAudience;
 import org.apache.hadoop.hbase.HRegionInfo;
 import org.apache.hadoop.hbase.classification.InterfaceAudience;
 import org.apache.hadoop.hbase.regionserver.HRegion;
@@ -73,16 +74,6 @@ public class HFileArchiver {
   }
 
   /**
-   * @return True if the Region exits in the filesystem.
-   */
-  public static boolean exists(Configuration conf, FileSystem fs, HRegionInfo info)
-      throws IOException {
-    Path rootDir = FSUtils.getRootDir(conf);
-    Path regionDir = HRegion.getRegionDir(rootDir, info);
-    return fs.exists(regionDir);
-  }
-
-  /**
    * Cleans up all the files for a HRegion by archiving the HFiles to the
    * archive directory
    * @param conf the configuration to use
@@ -146,7 +137,7 @@ public class HFileArchiver {
     FileStatus[] storeDirs = FSUtils.listStatus(fs, regionDir, nonHidden);
     // if there no files, we can just delete the directory and return;
     if (storeDirs == null) {
-      LOG.debug("Region directory " + regionDir + " empty.");
+      LOG.debug("Region directory (" + regionDir + ") was empty, just deleting and returning!");
       return deleteRegionWithoutArchiving(fs, regionDir);
     }
 
@@ -463,7 +454,7 @@ public class HFileArchiver {
   private static boolean deleteRegionWithoutArchiving(FileSystem fs, Path regionDir)
       throws IOException {
     if (fs.delete(regionDir, true)) {
-      LOG.debug("Deleted " + regionDir);
+      LOG.debug("Deleted all region files in: " + regionDir);
       return true;
     }
     LOG.debug("Failed to delete region directory:" + regionDir);

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-server/src/main/java/org/apache/hadoop/hbase/client/VersionInfoUtil.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/client/VersionInfoUtil.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/client/VersionInfoUtil.java
index 4f134c0..ed1ae31 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/client/VersionInfoUtil.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/client/VersionInfoUtil.java
@@ -35,7 +35,9 @@ public final class VersionInfoUtil {
   }
 
   public static boolean currentClientHasMinimumVersion(int major, int minor) {
-    return hasMinimumVersion(getCurrentClientVersionInfo(), major, minor);
+    RpcCallContext call = RpcServer.getCurrentCall();
+    HBaseProtos.VersionInfo versionInfo = call != null ? call.getClientVersionInfo() : null;
+    return hasMinimumVersion(versionInfo, major, minor);
   }
 
   public static boolean hasMinimumVersion(HBaseProtos.VersionInfo versionInfo,
@@ -51,7 +53,7 @@ public final class VersionInfoUtil {
         return clientMinor >= minor;
       }
       try {
-        final String[] components = getVersionComponents(versionInfo);
+        String[] components = versionInfo.getVersion().split("\\.");
 
         int clientMajor = components.length > 0 ? Integer.parseInt(components[0]) : 0;
         if (clientMajor != major) {
@@ -66,79 +68,4 @@ public final class VersionInfoUtil {
     }
     return false;
   }
-
-  /**
-   * @return the versionInfo extracted from the current RpcCallContext
-   */
-  private static HBaseProtos.VersionInfo getCurrentClientVersionInfo() {
-    RpcCallContext call = RpcServer.getCurrentCall();
-    return call != null ? call.getClientVersionInfo() : null;
-  }
-
-  /**
-   * @return the version number extracted from the current RpcCallContext as int.
-   *         (e.g. 0x0103004 is 1.3.4)
-   */
-  public static int getCurrentClientVersionNumber() {
-    return getVersionNumber(getCurrentClientVersionInfo());
-  }
-
-
-  /**
-   * @param version
-   * @return the passed-in <code>version</code> int as a version String
-   *         (e.g. 0x0103004 is 1.3.4)
-   */
-  public static String versionNumberToString(final int version) {
-    return String.format("%d.%d.%d",
-        ((version >> 20) & 0xff),
-        ((version >> 12) & 0xff),
-        (version & 0xfff));
-  }
-
-  /**
-   * Pack the full number version in a int. by shifting each component by 8bit,
-   * except the dot release which has 12bit.
-   * Examples: (1.3.4 is 0x0103004, 2.1.0 is 0x0201000)
-   * @param versionInfo the VersionInfo object to pack
-   * @return the version number as int. (e.g. 0x0103004 is 1.3.4)
-   */
-  private static int getVersionNumber(final HBaseProtos.VersionInfo versionInfo) {
-    if (versionInfo != null) {
-      try {
-        final String[] components = getVersionComponents(versionInfo);
-        int clientMajor = components.length > 0 ? Integer.parseInt(components[0]) : 0;
-        int clientMinor = components.length > 1 ? Integer.parseInt(components[1]) : 0;
-        int clientPatch = components.length > 2 ? Integer.parseInt(components[2]) : 0;
-        return buildVersionNumber(clientMajor, clientMinor, clientPatch);
-      } catch (NumberFormatException e) {
-        int clientMajor = versionInfo.hasVersionMajor() ? versionInfo.getVersionMajor() : 0;
-        int clientMinor = versionInfo.hasVersionMinor() ? versionInfo.getVersionMinor() : 0;
-        return buildVersionNumber(clientMajor, clientMinor, 0);
-      }
-    }
-    return(0); // no version
-  }
-
-  /**
-   * Pack the full number version in a int. by shifting each component by 8bit,
-   * except the dot release which has 12bit.
-   * Examples: (1.3.4 is 0x0103004, 2.1.0 is 0x0201000)
-   * @param major version major number
-   * @param minor version minor number
-   * @param patch version patch number
-   * @return the version number as int. (e.g. 0x0103004 is 1.3.4)
-   */
-  private static int buildVersionNumber(int major, int minor, int patch) {
-    return (major << 20) | (minor << 12) | patch;
-  }
-
-  /**
-   * Returns the version components
-   * Examples: "1.2.3" returns [1, 2, 3], "4.5.6-SNAPSHOT" returns [4, 5, 6, "SNAPSHOT"]
-   * @returns the components of the version string
-   */
-  private static String[] getVersionComponents(final HBaseProtos.VersionInfo versionInfo) {
-    return versionInfo.getVersion().split("[\\.-]");
-  }
 }

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java
index ca68de2..e36feea 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/RegionObserver.java
@@ -448,8 +448,8 @@ public interface RegionObserver extends Coprocessor {
    * Called before the region is split.
    * @param c the environment provided by the region server
    * (e.getRegion() returns the parent region)
-   * @deprecated No longer called in hbase2/AMv2 given the master runs splits now;
-   * @see MasterObserver
+   * @deprecated Use preSplit(
+   *    final ObserverContext&lt;RegionCoprocessorEnvironment&gt; c, byte[] splitRow)
    */
   @Deprecated
   default void preSplit(final ObserverContext<RegionCoprocessorEnvironment> c) throws IOException {}
@@ -460,8 +460,6 @@ public interface RegionObserver extends Coprocessor {
    * (e.getRegion() returns the parent region)
    *
    * Note: the logic moves to Master; it is unused in RS
-   * @deprecated No longer called in hbase2/AMv2 given the master runs splits now;
-   * @see MasterObserver
    */
   @Deprecated
   default void preSplit(final ObserverContext<RegionCoprocessorEnvironment> c, byte[] splitRow)
@@ -473,8 +471,7 @@ public interface RegionObserver extends Coprocessor {
    * (e.getRegion() returns the parent region)
    * @param l the left daughter region
    * @param r the right daughter region
-   * @deprecated No longer called in hbase2/AMv2 given the master runs splits now;
-   * @see MasterObserver
+   * @deprecated Use postCompleteSplit() instead
    */
   @Deprecated
   default void postSplit(final ObserverContext<RegionCoprocessorEnvironment> c, final Region l,
@@ -488,8 +485,6 @@ public interface RegionObserver extends Coprocessor {
    * @param metaEntries
    *
    * Note: the logic moves to Master; it is unused in RS
-   * @deprecated No longer called in hbase2/AMv2 given the master runs splits now;
-   * @see MasterObserver
   */
   @Deprecated
   default void preSplitBeforePONR(final ObserverContext<RegionCoprocessorEnvironment> ctx,
@@ -500,9 +495,8 @@ public interface RegionObserver extends Coprocessor {
    * Calling {@link org.apache.hadoop.hbase.coprocessor.ObserverContext#bypass()} has no
    * effect in this hook.
    * @param ctx
+   *
    * Note: the logic moves to Master; it is unused in RS
-   * @deprecated No longer called in hbase2/AMv2 given the master runs splits now;
-   * @see MasterObserver
   */
   @Deprecated
   default void preSplitAfterPONR(final ObserverContext<RegionCoprocessorEnvironment> ctx)
@@ -513,8 +507,6 @@ public interface RegionObserver extends Coprocessor {
    * @param ctx
    *
    * Note: the logic moves to Master; it is unused in RS
-   * @deprecated No longer called in hbase2/AMv2 given the master runs splits now;
-   * @see MasterObserver
   */
   @Deprecated
   default void preRollBackSplit(final ObserverContext<RegionCoprocessorEnvironment> ctx)
@@ -525,8 +517,6 @@ public interface RegionObserver extends Coprocessor {
    * @param ctx
    *
    * Note: the logic moves to Master; it is unused in RS
-   * @deprecated No longer called in hbase2/AMv2 given the master runs splits now;
-   * @see MasterObserver
   */
   @Deprecated
   default void postRollBackSplit(final ObserverContext<RegionCoprocessorEnvironment> ctx)
@@ -536,11 +526,7 @@ public interface RegionObserver extends Coprocessor {
    * Called after any split request is processed.  This will be called irrespective of success or
    * failure of the split.
    * @param ctx
-   * @deprecated No longer called in hbase2/AMv2 given the master runs splits now;
-   * implement {@link MasterObserver#postCompletedSplitRegionAction(ObserverContext, HRegionInfo, HRegionInfo)}
-   * instead.
    */
-  @Deprecated
   default void postCompleteSplit(final ObserverContext<RegionCoprocessorEnvironment> ctx)
     throws IOException {}
   /**

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/CallRunner.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/CallRunner.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/CallRunner.java
index 578fb0f..f476b11 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/CallRunner.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/CallRunner.java
@@ -135,14 +135,7 @@ public class CallRunner {
         RpcServer.LOG.warn("Can not complete this request in time, drop it: " + call);
         return;
       } catch (Throwable e) {
-        if (e instanceof ServerNotRunningYetException) {
-          // If ServerNotRunningYetException, don't spew stack trace.
-          if (RpcServer.LOG.isTraceEnabled()) {
-            RpcServer.LOG.trace(call.toShortString(), e);
-          }
-        } else {
-          RpcServer.LOG.debug(call.toShortString(), e);
-        }
+        RpcServer.LOG.debug(Thread.currentThread().getName() + ": " + call.toShortString(), e);
         errorThrowable = e;
         error = StringUtils.stringifyException(e);
         if (e instanceof Error) {

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcExecutor.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcExecutor.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcExecutor.java
index 313535d..3cb6011 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcExecutor.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/RpcExecutor.java
@@ -142,7 +142,7 @@ public abstract class RpcExecutor {
       queueClass = LinkedBlockingQueue.class;
     }
 
-    LOG.info("RpcExecutor " + name + " using " + callQueueType
+    LOG.info("RpcExecutor " + " name " + " using " + callQueueType
         + " as call queue; numCallQueues=" + numCallQueues + "; maxQueueLength=" + maxQueueLength
         + "; handlerCount=" + handlerCount);
   }
@@ -205,8 +205,6 @@ public abstract class RpcExecutor {
     double handlerFailureThreshhold = conf == null ? 1.0 : conf.getDouble(
       HConstants.REGION_SERVER_HANDLER_ABORT_ON_ERROR_PERCENT,
       HConstants.DEFAULT_REGION_SERVER_HANDLER_ABORT_ON_ERROR_PERCENT);
-    LOG.debug("Started " + handlers.size() + " " + threadPrefix +
-        " handlers, qsize=" + qsize + " on port=" + port);
     for (int i = 0; i < numHandlers; i++) {
       final int index = qindex + (i % qsize);
       String name = "RpcServer." + threadPrefix + ".handler=" + handlers.size() + ",queue=" + index
@@ -214,6 +212,7 @@ public abstract class RpcExecutor {
       Handler handler = getHandler(name, handlerFailureThreshhold, callQueues.get(index),
         activeHandlerCount);
       handler.start();
+      LOG.debug("Started " + name);
       handlers.add(handler);
     }
   }

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleRpcServer.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleRpcServer.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleRpcServer.java
index 040209b..481b701 100644
--- a/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleRpcServer.java
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/ipc/SimpleRpcServer.java
@@ -130,7 +130,7 @@ public class SimpleRpcServer extends RpcServer {
       // has an advantage in that it is easy to shutdown the pool.
       readPool = Executors.newFixedThreadPool(readThreads,
         new ThreadFactoryBuilder().setNameFormat(
-          "Reader=%d,bindAddress=" + bindAddress.getHostName() +
+          "RpcServer.reader=%d,bindAddress=" + bindAddress.getHostName() +
           ",port=" + port).setDaemon(true)
         .setUncaughtExceptionHandler(Threads.LOGGING_EXCEPTION_HANDLER).build());
       for (int i = 0; i < readThreads; ++i) {
@@ -142,7 +142,7 @@ public class SimpleRpcServer extends RpcServer {
 
       // Register accepts on the server socket with the selector.
       acceptChannel.register(selector, SelectionKey.OP_ACCEPT);
-      this.setName("Listener,port=" + port);
+      this.setName("RpcServer.listener,port=" + port);
       this.setDaemon(true);
     }
 
@@ -331,7 +331,7 @@ public class SimpleRpcServer extends RpcServer {
         throw ieo;
       } catch (Exception e) {
         if (LOG.isDebugEnabled()) {
-          LOG.debug("Caught exception while reading:", e);
+          LOG.debug(getName() + ": Caught exception while reading:", e);
         }
         count = -1; //so that the (count < 0) block is executed
       }
@@ -608,8 +608,8 @@ public class SimpleRpcServer extends RpcServer {
     SimpleServerRpcConnection register(SocketChannel channel) {
       SimpleServerRpcConnection connection = getConnection(channel, System.currentTimeMillis());
       add(connection);
-      if (LOG.isTraceEnabled()) {
-        LOG.trace("Connection from " + connection +
+      if (LOG.isDebugEnabled()) {
+        LOG.debug("Server connection from " + connection +
             "; connections=" + size() +
             ", queued calls size (bytes)=" + callQueueSizeInBytes.sum() +
             ", general queued calls=" + scheduler.getGeneralQueueLength() +
@@ -621,8 +621,8 @@ public class SimpleRpcServer extends RpcServer {
     boolean close(SimpleServerRpcConnection connection) {
       boolean exists = remove(connection);
       if (exists) {
-        if (LOG.isTraceEnabled()) {
-          LOG.trace(Thread.currentThread().getName() +
+        if (LOG.isDebugEnabled()) {
+          LOG.debug(Thread.currentThread().getName() +
               ": disconnecting client " + connection +
               ". Number of active connections: "+ size());
         }
@@ -698,4 +698,4 @@ public class SimpleRpcServer extends RpcServer {
     }
   }
 
-}
+}
\ No newline at end of file

http://git-wip-us.apache.org/repos/asf/hbase/blob/a3c5a744/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignCallable.java
----------------------------------------------------------------------
diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignCallable.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignCallable.java
new file mode 100644
index 0000000..4513a5d
--- /dev/null
+++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/master/AssignCallable.java
@@ -0,0 +1,49 @@
+/**
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.hadoop.hbase.master;
+
+import java.util.concurrent.Callable;
+
+import org.apache.hadoop.hbase.classification.InterfaceAudience;
+import org.apache.hadoop.hbase.HRegionInfo;
+
+/**
+ * A callable object that invokes the corresponding action that needs to be
+ * taken for assignment of a region in transition. 
+ * Implementing as future callable we are able to act on the timeout
+ * asynchronously.
+ */
+@InterfaceAudience.Private
+public class AssignCallable implements Callable<Object> {
+  private AssignmentManager assignmentManager;
+
+  private HRegionInfo hri;
+
+  public AssignCallable(
+      AssignmentManager assignmentManager, HRegionInfo hri) {
+    this.assignmentManager = assignmentManager;
+    this.hri = hri;
+  }
+
+  @Override
+  public Object call() throws Exception {
+    assignmentManager.assign(hri);
+    return null;
+  }
+}