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Posted to issues@hbase.apache.org by "Hudson (JIRA)" <ji...@apache.org> on 2012/11/05 02:36:25 UTC
[jira] [Commented] (HBASE-6846) BitComparator bug -
ArrayIndexOutOfBoundsException
[ https://issues.apache.org/jira/browse/HBASE-6846?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13490373#comment-13490373 ]
Hudson commented on HBASE-6846:
-------------------------------
Integrated in HBase-0.94-security-on-Hadoop-23 #9 (See [https://builds.apache.org/job/HBase-0.94-security-on-Hadoop-23/9/])
HBASE-6846 BitComparator bug - ArrayIndexOutOfBoundsException (Lucian George Iordache) (Revision 1402888)
Result = FAILURE
larsh :
Files :
* /hbase/branches/0.94/src/main/java/org/apache/hadoop/hbase/filter/BitComparator.java
* /hbase/branches/0.94/src/test/java/org/apache/hadoop/hbase/filter/TestBitComparator.java
> BitComparator bug - ArrayIndexOutOfBoundsException
> --------------------------------------------------
>
> Key: HBASE-6846
> URL: https://issues.apache.org/jira/browse/HBASE-6846
> Project: HBase
> Issue Type: Bug
> Components: Filters
> Affects Versions: 0.94.1
> Environment: HBase 0.94.1 + Hadoop 2.0.0-cdh4.0.1
> Reporter: Lucian George Iordache
> Assignee: Lucian George Iordache
> Fix For: 0.94.3, 0.96.0
>
> Attachments: 6846-trunk.txt, HBASE-6846.patch
>
>
> The HBase 0.94.1 BitComparator introduced a bug in the method "compareTo":
> {code}
> @Override
> public int compareTo(byte[] value, int offset, int length) {
> if (length != this.value.length) {
> return 1;
> }
> int b = 0;
> //Iterating backwards is faster because we can quit after one non-zero byte.
> for (int i = value.length - 1; i >= 0 && b == 0; i--) {
> switch (bitOperator) {
> case AND:
> b = (this.value[i] & value[i+offset]) & 0xff;
> break;
> case OR:
> b = (this.value[i] | value[i+offset]) & 0xff;
> break;
> case XOR:
> b = (this.value[i] ^ value[i+offset]) & 0xff;
> break;
> }
> }
> return b == 0 ? 1 : 0;
> }
> {code}
> I've encountered this problem when using a BitComparator with a configured this.value.length=8, and in the HBase table there were KeyValues with keyValue.getBuffer().length=207911 bytes. In this case:
> {code}
> for (int i = 207910; i >= 0 && b == 0; i--) {
> switch (bitOperator) {
> case AND:
> b = (this.value[207910] ... ==> ArrayIndexOutOfBoundsException
> break;
> {code}
> That loop should use:
> {code}
> for (int i = length - 1; i >= 0 && b == 0; i--) { (or this.value.length.)
> {code}
> Should I provide a patch for correcting the problem?
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