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HBASE-10949 Reversed scan could hang 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1587061 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
jxiang 2014-04-13 17:56:01 +00:00
parent 2f4997c19a
commit b5867cb327
1 changed files with 8 additions and 4 deletions
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12
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/StoreFileScanner.java
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@ -37,7 +37,6 @@ import org.apache.hadoop.hbase.KeyValueUtil;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.io.hfile.HFileScanner;
import org.apache.hadoop.hbase.regionserver.StoreFile.Reader;
import org.apache.hadoop.hbase.util.Bytes;
/**
* KeyValueScanner adaptor over the Reader. It also provides hooks into
@ -200,7 +199,7 @@ public class StoreFileScanner implements KeyValueScanner {
hfs.next();
cur = hfs.getKeyValue();
if (this.stopSkippingKVsIfNextRow
&& Bytes.compareTo(cur.getRowArray(), cur.getRowOffset(),
&& getComparator().compareRows(cur.getRowArray(), cur.getRowOffset(),
cur.getRowLength(), startKV.getRowArray(), startKV.getRowOffset(),
startKV.getRowLength()) > 0) {
return false;
@ -363,6 +362,10 @@ public class StoreFileScanner implements KeyValueScanner {
return reader;
}
KeyValue.KVComparator getComparator() {
return reader.getComparator();
}
@Override
public boolean realSeekDone() {
return realSeekDone;
@ -405,6 +408,7 @@ public class StoreFileScanner implements KeyValueScanner {
}
@Override
@SuppressWarnings("deprecation")
public boolean seekToPreviousRow(Cell key) throws IOException {
try {
try {
@ -434,7 +438,7 @@ public class StoreFileScanner implements KeyValueScanner {
this.stopSkippingKVsIfNextRow = false;
}
if (!resultOfSkipKVs
|| KeyValue.COMPARATOR.compareRows(cur, firstKeyOfPreviousRow) > 0) {
|| getComparator().compareRows(cur, firstKeyOfPreviousRow) > 0) {
return seekToPreviousRow(firstKeyOfPreviousRow);
}
@ -466,7 +470,7 @@ public class StoreFileScanner implements KeyValueScanner {
public boolean backwardSeek(Cell key) throws IOException {
seek(key);
if (cur == null
|| Bytes.compareTo(cur.getRowArray(), cur.getRowOffset(),
|| getComparator().compareRows(cur.getRowArray(), cur.getRowOffset(),
cur.getRowLength(), key.getRowArray(), key.getRowOffset(),
key.getRowLength()) > 0) {
return seekToPreviousRow(key);