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HBASE-5809 Avoid move api to take the destination server same as the source server. (Rajesh) 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1328458 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
ramkrishna 2012-04-20 17:36:02 +00:00
parent e05c21c0cb
commit 14f80913e5
2 changed files with 23 additions and 0 deletions
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5
src/main/java/org/apache/hadoop/hbase/master/HMaster.java
View File

@ -1174,6 +1174,11 @@ Server {
this.assignmentManager.unassign(hri);
} else {
dest = new ServerName(Bytes.toString(destServerName));
if (dest.equals(p.getSecond())) {
LOG.debug("Skipping move of region " + hri.getRegionNameAsString()
+ " because region already assigned to the same server " + dest +".");
return;
}
try {
if (this.cpHost != null) {
if (this.cpHost.preMove(p.getFirst(), p.getSecond(), dest)) {

18
src/test/java/org/apache/hadoop/hbase/client/TestAdmin.java
View File

@ -43,6 +43,8 @@ import org.apache.hadoop.hbase.*;
import org.apache.hadoop.hbase.executor.EventHandler;
import org.apache.hadoop.hbase.executor.EventHandler.EventType;
import org.apache.hadoop.hbase.executor.ExecutorService;
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.regionserver.HRegion;
import org.apache.hadoop.hbase.regionserver.HRegionServer;
@ -1404,6 +1406,22 @@ public class TestAdmin {
assertTrue(("actual count: " + count), count <= 2);
}
@Test
public void testMoveToPreviouslyAssignedRS() throws IOException {
byte[] tableName = Bytes.toBytes("testMoveToPreviouslyAssignedRS");
MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
HMaster master = cluster.getMaster();
HBaseAdmin localAdmin = createTable(tableName);
List<HRegionInfo> tableRegions = localAdmin.getTableRegions(tableName);
HRegionInfo hri = tableRegions.get(0);
AssignmentManager am = master.getAssignmentManager();
ServerName server = am.getRegionServerOfRegion(hri);
localAdmin.move(hri.getEncodedNameAsBytes(), Bytes.toBytes(server.getServerName()));
assertEquals("Current region server and region server before move should be same.", server,
am.getRegionServerOfRegion(hri));
}
private void setUpforLogRolling() {
// Force a region split after every 768KB
TEST_UTIL.getConfiguration().setLong(HConstants.HREGION_MAX_FILESIZE,