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HBASE-4716 Improve locking for single column family bulk load 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1196674 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Zhihong Yu 2011-11-02 16:28:09 +00:00
parent 321d6c3025
commit 0e32567cdd
2 changed files with 39 additions and 5 deletions
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1
CHANGES.txt
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@ -442,6 +442,7 @@ Release 0.92.0 - Unreleased
HBASE-3515 [replication] ReplicationSource can miss a log after RS comes out of GC
HBASE-4713 Raise debug level to warn on ExecutionException in
HConnectionManager$HConnectionImplementation (Lucian George Iordache)
HBASE-4716 Improve locking for single column family bulk load
TESTS
HBASE-4450 test for number of blocks read: to serve as baseline for expected

43
src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
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@ -2782,6 +2782,34 @@ public class HRegion implements HeapSize { // , Writable{
return lid;
}
enum COLUMN_FAMILY_TYPES {
NONE, // there is no column family
SINGLE,
MULTIPLE // there are more than one column family
}
/**
* Determines the type of column family based on list of family/hfilePath pairs
*
* @param familyPaths List of Pair<byte[] column family, String hfilePath>
*/
public static COLUMN_FAMILY_TYPES getColumnFamilyType(
List<Pair<byte[], String>> familyPaths) {
if (familyPaths == null) return COLUMN_FAMILY_TYPES.NONE;
COLUMN_FAMILY_TYPES familyType = COLUMN_FAMILY_TYPES.SINGLE;
byte[] family = null;
for (Pair<byte[], String> pair : familyPaths) {
byte[] fam = pair.getFirst();
if (family == null) {
family = fam;
} else if (!Bytes.equals(family, fam)) {
familyType = COLUMN_FAMILY_TYPES.MULTIPLE;
break;
}
}
return familyType;
}
/**
* Attempts to atomically load a group of hfiles. This is critical for loading
* rows with multiple column families atomically.
@ -2790,7 +2818,8 @@ public class HRegion implements HeapSize { // , Writable{
*/
public void bulkLoadHFiles(List<Pair<byte[], String>> familyPaths)
throws IOException {
startBulkRegionOperation();
// we need writeLock for multi-family bulk load
startBulkRegionOperation(getColumnFamilyType(familyPaths) == COLUMN_FAMILY_TYPES.MULTIPLE);
this.writeRequestsCount.increment();
List<IOException> ioes = new ArrayList<IOException>();
List<Pair<byte[], String>> failures = new ArrayList<Pair<byte[], String>>();
@ -4453,14 +4482,17 @@ public class HRegion implements HeapSize { // , Writable{
* Acquires a writelock and checks if the region is closing or closed.
* @throws NotServingRegionException when the region is closing or closed
*/
private void startBulkRegionOperation() throws NotServingRegionException {
private void startBulkRegionOperation(boolean writeLockNeeded)
throws NotServingRegionException {
if (this.closing.get()) {
throw new NotServingRegionException(regionInfo.getRegionNameAsString() +
" is closing");
}
lock.writeLock().lock();
if (writeLockNeeded) lock.writeLock().lock();
else lock.readLock().lock();
if (this.closed.get()) {
lock.writeLock().unlock();
if (writeLockNeeded) lock.writeLock().unlock();
else lock.readLock().unlock();
throw new NotServingRegionException(regionInfo.getRegionNameAsString() +
" is closed");
}
@ -4471,7 +4503,8 @@ public class HRegion implements HeapSize { // , Writable{
* to the try block of #startRegionOperation
*/
private void closeBulkRegionOperation(){
lock.writeLock().unlock();
if (lock.writeLock().isHeldByCurrentThread()) lock.writeLock().unlock();
else lock.readLock().unlock();
}
/**