Apache
/
hbase
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

HBASE-6326 Avoid nested retry loops in HConnectionManager 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1357756 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
larsh 2012-07-05 17:35:24 +00:00
parent 68da494198
commit 34e96f5b32
1 changed files with 10 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
hbase-server/src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java
View File

@ -900,18 +900,18 @@ public class HConnectionManager {
public HRegionLocation locateRegion(final byte [] tableName,
final byte [] row)
throws IOException{
return locateRegion(tableName, row, true);
return locateRegion(tableName, row, true, true);
}
@Override
public HRegionLocation relocateRegion(final byte [] tableName,
final byte [] row)
throws IOException{
return locateRegion(tableName, row, false);
return locateRegion(tableName, row, false, true);
}
private HRegionLocation locateRegion(final byte [] tableName,
final byte [] row, boolean useCache)
final byte [] row, boolean useCache, boolean retry)
throws IOException {
if (this.closed) throw new IOException(toString() + " closed");
if (tableName == null || tableName.length == 0) {
@ -940,11 +940,11 @@ public class HConnectionManager {
}
} else if (Bytes.equals(tableName, HConstants.META_TABLE_NAME)) {
return locateRegionInMeta(HConstants.ROOT_TABLE_NAME, tableName, row,
useCache, metaRegionLock);
useCache, metaRegionLock, retry);
} else {
// Region not in the cache - have to go to the meta RS
return locateRegionInMeta(HConstants.META_TABLE_NAME, tableName, row,
useCache, userRegionLock);
useCache, userRegionLock, retry);
}
}
@ -1014,7 +1014,7 @@ public class HConnectionManager {
*/
private HRegionLocation locateRegionInMeta(final byte [] parentTable,
final byte [] tableName, final byte [] row, boolean useCache,
Object regionLockObject)
Object regionLockObject, boolean retry)
throws IOException {
HRegionLocation location;
// If we are supposed to be using the cache, look in the cache to see if
@ -1025,14 +1025,14 @@ public class HConnectionManager {
return location;
}
}
int localNumRetries = retry ? numRetries : 1;
// build the key of the meta region we should be looking for.
// the extra 9's on the end are necessary to allow "exact" matches
// without knowing the precise region names.
byte [] metaKey = HRegionInfo.createRegionName(tableName, row,
HConstants.NINES, false);
for (int tries = 0; true; tries++) {
if (tries >= numRetries) {
if (tries >= localNumRetries) {
throw new NoServerForRegionException("Unable to find region for "
+ Bytes.toStringBinary(row) + " after " + numRetries + " tries.");
}
@ -1040,7 +1040,7 @@ public class HConnectionManager {
HRegionLocation metaLocation = null;
try {
// locate the root or meta region
metaLocation = locateRegion(parentTable, metaKey);
metaLocation = locateRegion(parentTable, metaKey, true, false);
// If null still, go around again.
if (metaLocation == null) continue;
ClientProtocol server =
@ -1891,7 +1891,7 @@ public class HConnectionManager {
final Row row = aAction.getAction();
if (row != null) {
final HRegionLocation loc = hci.locateRegion(this.tableName, row.getRow(), true);
final HRegionLocation loc = hci.locateRegion(this.tableName, row.getRow());
if (loc == null) {
throw new IOException("No location found, aborting submit.");
}