[CASSANDRA-3467] get_slice, super column family with UUIDType as column comparator

• Type: Bug
• Status: Resolved
• Priority: Low
• Resolution: Fixed
• Fix Version/s: 1.0.3
• Component/s: Legacy/CQL

Environment

ubuntu 11.04
java version "1.6.0_26"
Java(TM) SE Runtime Environment (build 1.6.0_26-b03)
Java HotSpot(TM) 64-Bit Server VM (build 20.1-b02, mixed mode)

php interface build with thrift 0.7.0

• Severity: Low
• Assignee: Rick Branson
• Reporter: alesl

Authors

Rick Branson

Reviewers

Jonathan Ellis

• Created: 07/Nov/11 20:33
• Updated: 16/Apr/19 09:32
• Resolved: 08/Nov/11 18:03

Description

get_slice with more than one column selected by predicate fails, when comparator is set to (Lexical|Time)UUIDType and more than one column is being selected.

// Sample data:
create column family A with column_type = Super and comparator = LexicalUUIDType and subcomparator = UTF8Type and default_validation_class = UTF8Type;
set A[ascii('key')][lexicaluuid('b139337e-fb6d-41e1-a868-1db7f2a52a42')]['a'] = 'A';
set A[ascii('key')][lexicaluuid('b139337e-fb6d-41e1-a868-1db7f2a52a42')]['b'] = 'B';
set A[ascii('key')][lexicaluuid('b139337e-fb6d-41e1-a868-1db7f2a52a42')]['c'] = 'C';
set A[ascii('key')][lexicaluuid('b139337e-fb6d-41e1-a868-1db7f2a52a42')]['d'] = 'D';
set A[ascii('key')][lexicaluuid('b139337e-fb6d-41e1-a868-1db7f2a52a42')]['e'] = 'E';

// Failed call
$client->get_slice(
    'key', 
    new ColumnParent(array(
        'column_family'=>'A', 
        'super_column'=>base64_decode('sTkzfvttQeGoaB238qUqQg==')
    )), 
    new SlicePredicate(array(
        'column_names'=>array('a', 'b')
    )), 
    1
);

// Exception thrown
ERROR [ReadStage:302] 2011-11-07 21:29:30,339 AbstractCassandraDaemon.java (line 133) Fatal exception in thread Thread[ReadStage:302,5,main]
java.lang.RuntimeException: java.lang.IndexOutOfBoundsException
	at org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1269)
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
	at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.IndexOutOfBoundsException
	at java.nio.Buffer.checkIndex(Buffer.java:520)
	at java.nio.HeapByteBuffer.getLong(HeapByteBuffer.java:391)
	at org.apache.cassandra.utils.UUIDGen.getUUID(UUIDGen.java:67)
	at org.apache.cassandra.db.marshal.LexicalUUIDType.compare(LexicalUUIDType.java:58)
	at org.apache.cassandra.db.marshal.LexicalUUIDType.compare(LexicalUUIDType.java:31)
	at java.util.TreeMap.put(TreeMap.java:530)
	at java.util.TreeSet.add(TreeSet.java:238)
	at java.util.AbstractCollection.addAll(AbstractCollection.java:305)
	at java.util.TreeSet.addAll(TreeSet.java:295)
	at org.apache.cassandra.db.CollationController.collectTimeOrderedData(CollationController.java:98)
	at org.apache.cassandra.db.CollationController.getTopLevelColumns(CollationController.java:61)
	at org.apache.cassandra.db.ColumnFamilyStore.getTopLevelColumns(ColumnFamilyStore.java:1278)
	at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1164)
	at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1131)
	at org.apache.cassandra.db.Table.getRow(Table.java:378)
	at org.apache.cassandra.db.SliceByNamesReadCommand.getRow(SliceByNamesReadCommand.java:58)
	at org.apache.cassandra.service.StorageProxy$LocalReadRunnable.runMayThrow(StorageProxy.java:797)
	at org.apache.cassandra.service.StorageProxy$DroppableRunnable.run(StorageProxy.java:1265)
	... 3 more

// This works though
$client->get_slice(
    'key', 
    new ColumnParent(array(
        'column_family'=>'A', 
        'super_column'=>base64_decode('sTkzfvttQeGoaB238qUqQg==')
    )), 
    new SlicePredicate(array(
        'column_names'=>array('a')
    )), 
    1
);

// This works too
$client->get_slice('key', 
	new ColumnParent(array(
		'column_family'=>'A', 
		'super_column'=>base64_decode('sTkzfvttQeGoaB238qUqQg==')
	)), 
	new SlicePredicate(array(
		'slice_range'=>new SliceRange(array(
			'start'=>'', 
			'finish'=>'',
			'reversed'=>false,
			'count'=>100
		))
	)), 1);

Regards
ales