Author: ramkrishna
Date: Tue Oct 18 17:52:06 2011
New Revision: 1185771
URL: http://svn.apache.org/viewvc?rev=1185771&view=rev
Log:
HBASE-4585 Avoid seek operation when current kv is deleted(Liyin Tang)
Modified:
hbase/trunk/CHANGES.txt
hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/DeleteTracker.java
hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/ScanDeleteTracker.java
hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.java
hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/TestBlocksRead.java
hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/TestScanDeleteTracker.java
Modified: hbase/trunk/CHANGES.txt
URL:
http://svn.apache.org/viewvc/hbase/trunk/CHANGES.txt?rev=1185771&r1=1185770&r2=1185771&view=diff
==============================================================================
--- hbase/trunk/CHANGES.txt (original)
+++ hbase/trunk/CHANGES.txt Tue Oct 18 17:52:06 2011
@@ -625,6 +625,7 @@ Release 0.92.0 - Unreleased
HBASE-4568 Make zk dump jsp response faster
HBASE-4606 Remove spam in HCM and fix a list.size == 0
HBASE-3581 hbase rpc should send size of response
+ HBASE-4585 Avoid seek operation when current kv is deleted(Liyin Tang)
TASKS
Modified:
hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/DeleteTracker.java
URL:
http://svn.apache.org/viewvc/hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/DeleteTracker.java?rev=1185771&r1=1185770&r2=1185771&view=diff
==============================================================================
---
hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/DeleteTracker.java
(original)
+++
hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/DeleteTracker.java
Tue Oct 18 17:52:06 2011
@@ -51,9 +51,9 @@ public interface DeleteTracker {
* @param qualifierOffset column qualifier offset
* @param qualifierLength column qualifier length
* @param timestamp timestamp
- * @return true is the specified KeyValue is deleted, false if not
+ * @return deleteResult The result tells whether the KeyValue is deleted and
why
*/
- public boolean isDeleted(byte [] buffer, int qualifierOffset,
+ public DeleteResult isDeleted(byte [] buffer, int qualifierOffset,
int qualifierLength, long timestamp);
/**
@@ -94,4 +94,17 @@ public interface DeleteTracker {
NEXT_NEW
}
+ /**
+ * Returns codes for delete result.
+ * The codes tell the ScanQueryMatcher whether the kv is deleted and why.
+ * Based on the delete result, the ScanQueryMatcher will decide the next
+ * operation
+ */
+ public static enum DeleteResult {
+ FAMILY_DELETED, // The KeyValue is deleted by a delete family.
+ COLUMN_DELETED, // The KeyValue is deleted by a delete column.
+ VERSION_DELETED, // The KeyValue is deleted by a version delete.
+ NOT_DELETED
+ }
+
}
Modified:
hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/ScanDeleteTracker.java
URL:
http://svn.apache.org/viewvc/hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/ScanDeleteTracker.java?rev=1185771&r1=1185770&r2=1185771&view=diff
==============================================================================
---
hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/ScanDeleteTracker.java
(original)
+++
hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/ScanDeleteTracker.java
Tue Oct 18 17:52:06 2011
@@ -21,6 +21,7 @@
package org.apache.hadoop.hbase.regionserver;
import org.apache.hadoop.hbase.KeyValue;
+import org.apache.hadoop.hbase.regionserver.DeleteTracker.DeleteResult;
import org.apache.hadoop.hbase.util.Bytes;
/**
@@ -99,13 +100,13 @@ public class ScanDeleteTracker implement
* @param qualifierOffset column qualifier offset
* @param qualifierLength column qualifier length
* @param timestamp timestamp
- * @return true is the specified KeyValue is deleted, false if not
+ * @return deleteResult
*/
@Override
- public boolean isDeleted(byte [] buffer, int qualifierOffset,
+ public DeleteResult isDeleted(byte [] buffer, int qualifierOffset,
int qualifierLength, long timestamp) {
if (timestamp <= familyStamp) {
- return true;
+ return DeleteResult.FAMILY_DELETED;
}
if (deleteBuffer != null) {
@@ -114,12 +115,12 @@ public class ScanDeleteTracker implement
if (ret == 0) {
if (deleteType == KeyValue.Type.DeleteColumn.getCode()) {
- return true;
+ return DeleteResult.COLUMN_DELETED;
}
// Delete (aka DeleteVersion)
// If the timestamp is the same, keep this one
if (timestamp == deleteTimestamp) {
- return true;
+ return DeleteResult.VERSION_DELETED;
}
// use assert or not?
assert timestamp < deleteTimestamp;
@@ -138,7 +139,7 @@ public class ScanDeleteTracker implement
}
}
- return false;
+ return DeleteResult.NOT_DELETED;
}
@Override
@@ -158,4 +159,4 @@ public class ScanDeleteTracker implement
public void update() {
this.reset();
}
-}
\ No newline at end of file
+}
Modified:
hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.java
URL:
http://svn.apache.org/viewvc/hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.java?rev=1185771&r1=1185770&r2=1185771&view=diff
==============================================================================
---
hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.java
(original)
+++
hbase/trunk/src/main/java/org/apache/hadoop/hbase/regionserver/ScanQueryMatcher.java
Tue Oct 18 17:52:06 2011
@@ -26,6 +26,7 @@ import org.apache.hadoop.hbase.client.Sc
import org.apache.hadoop.hbase.filter.Filter;
import org.apache.hadoop.hbase.filter.Filter.ReturnCode;
import org.apache.hadoop.hbase.io.TimeRange;
+import org.apache.hadoop.hbase.regionserver.DeleteTracker.DeleteResult;
import org.apache.hadoop.hbase.util.Bytes;
import java.io.IOException;
@@ -184,15 +185,20 @@ public class ScanQueryMatcher {
}
}
- if (!this.deletes.isEmpty() &&
- deletes.isDeleted(bytes, offset, qualLength, timestamp)) {
-
- // May be able to optimize the SKIP here, if we matched
- // due to a DelFam, we can skip to next row
- // due to a DelCol, we can skip to next col
- // But it requires more info out of isDelete().
- // needful -> million column challenge.
- return MatchCode.SKIP;
+ if (!this.deletes.isEmpty()) {
+ DeleteResult deleteResult = deletes.isDeleted(bytes, offset, qualLength,
+ timestamp);
+ switch (deleteResult) {
+ case FAMILY_DELETED:
+ case COLUMN_DELETED:
+ return columns.getNextRowOrNextColumn(bytes, offset, qualLength);
+ case VERSION_DELETED:
+ return MatchCode.SKIP;
+ case NOT_DELETED:
+ break;
+ default:
+ throw new RuntimeException("UNEXPECTED");
+ }
}
int timestampComparison = tr.compare(timestamp);
Modified:
hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/TestBlocksRead.java
URL:
http://svn.apache.org/viewvc/hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/TestBlocksRead.java?rev=1185771&r1=1185770&r2=1185771&view=diff
==============================================================================
---
hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/TestBlocksRead.java
(original)
+++
hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/TestBlocksRead.java
Tue Oct 18 17:52:06 2011
@@ -283,14 +283,14 @@ public class TestBlocksRead extends HBas
deleteFamily(FAMILY, "row", 6);
region.flushcache();
- // Baseline expected blocks read: 6.
- kvs = getData(FAMILY, "row", "col1", 6);
+ // Baseline expected blocks read: 4. [HBASE-4585]
+ kvs = getData(FAMILY, "row", "col1", 4);
assertEquals(0, kvs.length);
- kvs = getData(FAMILY, "row", "col2", 6);
+ kvs = getData(FAMILY, "row", "col2", 5);
assertEquals(0, kvs.length);
- kvs = getData(FAMILY, "row", "col3", 6);
+ kvs = getData(FAMILY, "row", "col3", 4);
assertEquals(0, kvs.length);
- kvs = getData(FAMILY, "row", Arrays.asList("col1", "col2", "col3"), 6);
+ kvs = getData(FAMILY, "row", Arrays.asList("col1", "col2", "col3"), 5);
assertEquals(0, kvs.length);
// File 5: Delete
@@ -304,8 +304,8 @@ public class TestBlocksRead extends HBas
putData(FAMILY, "row", "col3", 9);
region.flushcache();
- // Baseline expected blocks read: 10
- kvs = getData(FAMILY, "row", Arrays.asList("col1", "col2", "col3"), 10);
+ // Baseline expected blocks read: 8. [HBASE-4585]
+ kvs = getData(FAMILY, "row", Arrays.asList("col1", "col2", "col3"), 8);
assertEquals(0, kvs.length);
// File 7: Put back new data
Modified:
hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/TestScanDeleteTracker.java
URL:
http://svn.apache.org/viewvc/hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/TestScanDeleteTracker.java?rev=1185771&r1=1185770&r2=1185771&view=diff
==============================================================================
---
hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/TestScanDeleteTracker.java
(original)
+++
hbase/trunk/src/test/java/org/apache/hadoop/hbase/regionserver/TestScanDeleteTracker.java
Tue Oct 18 17:52:06 2011
@@ -23,6 +23,7 @@ package org.apache.hadoop.hbase.regionse
import org.apache.hadoop.hbase.HBaseTestCase;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.KeyValue;
+import org.apache.hadoop.hbase.regionserver.DeleteTracker.DeleteResult;
import org.apache.hadoop.hbase.util.Bytes;
@@ -42,8 +43,8 @@ public class TestScanDeleteTracker exten
deleteType = KeyValue.Type.Delete.getCode();
sdt.add(qualifier, 0, qualifier.length, timestamp, deleteType);
- boolean ret = sdt.isDeleted(qualifier, 0, qualifier.length, timestamp);
- assertEquals(true, ret);
+ DeleteResult ret = sdt.isDeleted(qualifier, 0, qualifier.length,
timestamp);
+ assertEquals(DeleteResult.VERSION_DELETED, ret);
}
public void testDeletedBy_DeleteColumn() {
@@ -52,8 +53,8 @@ public class TestScanDeleteTracker exten
sdt.add(qualifier, 0, qualifier.length, timestamp, deleteType);
timestamp -= 5;
- boolean ret = sdt.isDeleted(qualifier, 0, qualifier.length, timestamp);
- assertEquals(true, ret);
+ DeleteResult ret = sdt.isDeleted(qualifier, 0, qualifier.length,
timestamp);
+ assertEquals(DeleteResult.COLUMN_DELETED, ret);
}
public void testDeletedBy_DeleteFamily() {
@@ -63,8 +64,8 @@ public class TestScanDeleteTracker exten
sdt.add(qualifier, 0, qualifier.length, timestamp, deleteType);
timestamp -= 5;
- boolean ret = sdt.isDeleted(qualifier, 0, qualifier.length, timestamp);
- assertEquals(true, ret);
+ DeleteResult ret = sdt.isDeleted(qualifier, 0, qualifier.length,
timestamp);
+ assertEquals(DeleteResult.FAMILY_DELETED, ret);
}
public void testDelete_DeleteColumn() {
@@ -78,8 +79,8 @@ public class TestScanDeleteTracker exten
sdt.add(qualifier, 0, qualifier.length, timestamp, deleteType);
timestamp -= 5;
- boolean ret = sdt.isDeleted(qualifier, 0, qualifier.length, timestamp);
- assertEquals(true, ret);
+ DeleteResult ret = sdt.isDeleted(qualifier, 0, qualifier.length,
timestamp);
+ assertEquals(DeleteResult.COLUMN_DELETED, ret);
}
@@ -93,8 +94,8 @@ public class TestScanDeleteTracker exten
deleteType = KeyValue.Type.Delete.getCode();
sdt.add(qualifier, 0, qualifier.length, timestamp, deleteType);
- boolean ret = sdt.isDeleted(qualifier, 0, qualifier.length, timestamp);
- assertEquals(true, ret);
+ DeleteResult ret = sdt.isDeleted(qualifier, 0, qualifier.length,
timestamp);
+ assertEquals( DeleteResult.VERSION_DELETED, ret);
}
//Testing new way where we save the Delete in case of a Delete for specific
@@ -109,5 +110,4 @@ public class TestScanDeleteTracker exten
assertEquals(false ,sdt.isEmpty());
}
-
}
