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Posted to commits@cassandra.apache.org by "John Laban (Created) (JIRA)" <ji...@apache.org> on 2012/03/28 05:11:28 UTC
[jira] [Created] (CASSANDRA-4095) Internal error processing
get_slice (NullPointerException)
Internal error processing get_slice (NullPointerException)
----------------------------------------------------------
Key: CASSANDRA-4095
URL: https://issues.apache.org/jira/browse/CASSANDRA-4095
Project: Cassandra
Issue Type: Bug
Components: Core
Affects Versions: 1.0.8
Environment: Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
Reporter: John Laban
Priority: Minor
I get this pretty regularly. It seems to happen transiently on multiple nodes in my cluster, every so often, and goes away.
ERROR [Thrift:45] 2012-03-26 19:59:12,024 Cassandra.java (line 3041) Internal error processing get_slice
java.lang.NullPointerException
at org.apache.cassandra.db.SliceFromReadCommand.maybeGenerateRetryCommand(SliceFromReadCommand.java:76)
at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:724)
at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:564)
at org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:128)
at org.apache.cassandra.thrift.CassandraServer.getSlice(CassandraServer.java:283)
at org.apache.cassandra.thrift.CassandraServer.multigetSliceInternal(CassandraServer.java:365)
at org.apache.cassandra.thrift.CassandraServer.get_slice(CassandraServer.java:326)
at org.apache.cassandra.thrift.Cassandra$Processor$get_slice.process(Cassandra.java:3033)
at org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2889)
at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187)
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)
The line in question is (I think) the one below, so it looks like the column family reference for a row can sometimes be null?
int liveColumnsInRow = row != null ? row.cf.getLiveColumnCount() : 0;
Here is my column family (on 1.0.8):
ColumnFamily: WorkQueue (Super)
Key Validation Class: org.apache.cassandra.db.marshal.UTF8Type
Default column value validator: org.apache.cassandra.db.marshal.UTF8Type
Columns sorted by: org.apache.cassandra.db.marshal.UTF8Type/org.apache.cassandra.db.marshal.UTF8Type
Row cache size / save period in seconds / keys to save : 0.0/0/all
Row Cache Provider: org.apache.cassandra.cache.ConcurrentLinkedHashCacheProvider
Key cache size / save period in seconds: 0.0/0
GC grace seconds: 0
Compaction min/max thresholds: 4/32
Read repair chance: 0.0
Replicate on write: false
Bloom Filter FP chance: default
Built indexes: []
Compaction Strategy: org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy
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[jira] [Updated] (CASSANDRA-4095) Internal error processing
get_slice (NullPointerException)
Posted by "Jonathan Ellis (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-4095?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis updated CASSANDRA-4095:
--------------------------------------
Affects Version/s: (was: 1.0.8)
1.0.2
Fix Version/s: 1.1.0
1.0.9
> Internal error processing get_slice (NullPointerException)
> ----------------------------------------------------------
>
> Key: CASSANDRA-4095
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4095
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.0.2
> Environment: Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
> Reporter: John Laban
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 1.0.9, 1.1.0
>
> Attachments: 4095.txt
>
>
> I get this pretty regularly. It seems to happen transiently on multiple nodes in my cluster, every so often, and goes away.
> ERROR [Thrift:45] 2012-03-26 19:59:12,024 Cassandra.java (line 3041) Internal error processing get_slice
> java.lang.NullPointerException
> at org.apache.cassandra.db.SliceFromReadCommand.maybeGenerateRetryCommand(SliceFromReadCommand.java:76)
> at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:724)
> at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:564)
> at org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:128)
> at org.apache.cassandra.thrift.CassandraServer.getSlice(CassandraServer.java:283)
> at org.apache.cassandra.thrift.CassandraServer.multigetSliceInternal(CassandraServer.java:365)
> at org.apache.cassandra.thrift.CassandraServer.get_slice(CassandraServer.java:326)
> at org.apache.cassandra.thrift.Cassandra$Processor$get_slice.process(Cassandra.java:3033)
> at org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2889)
> at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187)
> 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)
> The line in question is (I think) the one below, so it looks like the column family reference for a row can sometimes be null?
> int liveColumnsInRow = row != null ? row.cf.getLiveColumnCount() : 0;
> Here is my column family (on 1.0.8):
> ColumnFamily: WorkQueue (Super)
> Key Validation Class: org.apache.cassandra.db.marshal.UTF8Type
> Default column value validator: org.apache.cassandra.db.marshal.UTF8Type
> Columns sorted by: org.apache.cassandra.db.marshal.UTF8Type/org.apache.cassandra.db.marshal.UTF8Type
> Row cache size / save period in seconds / keys to save : 0.0/0/all
> Row Cache Provider: org.apache.cassandra.cache.ConcurrentLinkedHashCacheProvider
> Key cache size / save period in seconds: 0.0/0
> GC grace seconds: 0
> Compaction min/max thresholds: 4/32
> Read repair chance: 0.0
> Replicate on write: false
> Bloom Filter FP chance: default
> Built indexes: []
> Compaction Strategy: org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy
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[jira] [Updated] (CASSANDRA-4095) Internal error processing
get_slice (NullPointerException)
Posted by "Sylvain Lebresne (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-4095?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Sylvain Lebresne updated CASSANDRA-4095:
----------------------------------------
Attachment: 4095_v2.txt
The patch doesn't compile, it's calling a method that doesn't exist. Attaching v2 that I think adds the intended method.
> Internal error processing get_slice (NullPointerException)
> ----------------------------------------------------------
>
> Key: CASSANDRA-4095
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4095
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.0.2
> Environment: Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
> Reporter: John Laban
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 1.0.9, 1.1.0
>
> Attachments: 4095.txt, 4095_v2.txt
>
>
> I get this pretty regularly. It seems to happen transiently on multiple nodes in my cluster, every so often, and goes away.
> ERROR [Thrift:45] 2012-03-26 19:59:12,024 Cassandra.java (line 3041) Internal error processing get_slice
> java.lang.NullPointerException
> at org.apache.cassandra.db.SliceFromReadCommand.maybeGenerateRetryCommand(SliceFromReadCommand.java:76)
> at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:724)
> at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:564)
> at org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:128)
> at org.apache.cassandra.thrift.CassandraServer.getSlice(CassandraServer.java:283)
> at org.apache.cassandra.thrift.CassandraServer.multigetSliceInternal(CassandraServer.java:365)
> at org.apache.cassandra.thrift.CassandraServer.get_slice(CassandraServer.java:326)
> at org.apache.cassandra.thrift.Cassandra$Processor$get_slice.process(Cassandra.java:3033)
> at org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2889)
> at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187)
> 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)
> The line in question is (I think) the one below, so it looks like the column family reference for a row can sometimes be null?
> int liveColumnsInRow = row != null ? row.cf.getLiveColumnCount() : 0;
> Here is my column family (on 1.0.8):
> ColumnFamily: WorkQueue (Super)
> Key Validation Class: org.apache.cassandra.db.marshal.UTF8Type
> Default column value validator: org.apache.cassandra.db.marshal.UTF8Type
> Columns sorted by: org.apache.cassandra.db.marshal.UTF8Type/org.apache.cassandra.db.marshal.UTF8Type
> Row cache size / save period in seconds / keys to save : 0.0/0/all
> Row Cache Provider: org.apache.cassandra.cache.ConcurrentLinkedHashCacheProvider
> Key cache size / save period in seconds: 0.0/0
> GC grace seconds: 0
> Compaction min/max thresholds: 4/32
> Read repair chance: 0.0
> Replicate on write: false
> Bloom Filter FP chance: default
> Built indexes: []
> Compaction Strategy: org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy
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[jira] [Commented] (CASSANDRA-4095) Internal error processing
get_slice (NullPointerException)
Posted by "Vijay (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-4095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13242401#comment-13242401 ]
Vijay commented on CASSANDRA-4095:
----------------------------------
I Should have also verified against 1.0, thanks!
> Internal error processing get_slice (NullPointerException)
> ----------------------------------------------------------
>
> Key: CASSANDRA-4095
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4095
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.0.2
> Environment: Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
> Reporter: John Laban
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 1.0.9, 1.1.0
>
> Attachments: 4095.txt, 4095_v2.txt
>
>
> I get this pretty regularly. It seems to happen transiently on multiple nodes in my cluster, every so often, and goes away.
> ERROR [Thrift:45] 2012-03-26 19:59:12,024 Cassandra.java (line 3041) Internal error processing get_slice
> java.lang.NullPointerException
> at org.apache.cassandra.db.SliceFromReadCommand.maybeGenerateRetryCommand(SliceFromReadCommand.java:76)
> at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:724)
> at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:564)
> at org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:128)
> at org.apache.cassandra.thrift.CassandraServer.getSlice(CassandraServer.java:283)
> at org.apache.cassandra.thrift.CassandraServer.multigetSliceInternal(CassandraServer.java:365)
> at org.apache.cassandra.thrift.CassandraServer.get_slice(CassandraServer.java:326)
> at org.apache.cassandra.thrift.Cassandra$Processor$get_slice.process(Cassandra.java:3033)
> at org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2889)
> at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187)
> 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)
> The line in question is (I think) the one below, so it looks like the column family reference for a row can sometimes be null?
> int liveColumnsInRow = row != null ? row.cf.getLiveColumnCount() : 0;
> Here is my column family (on 1.0.8):
> ColumnFamily: WorkQueue (Super)
> Key Validation Class: org.apache.cassandra.db.marshal.UTF8Type
> Default column value validator: org.apache.cassandra.db.marshal.UTF8Type
> Columns sorted by: org.apache.cassandra.db.marshal.UTF8Type/org.apache.cassandra.db.marshal.UTF8Type
> Row cache size / save period in seconds / keys to save : 0.0/0/all
> Row Cache Provider: org.apache.cassandra.cache.ConcurrentLinkedHashCacheProvider
> Key cache size / save period in seconds: 0.0/0
> GC grace seconds: 0
> Compaction min/max thresholds: 4/32
> Read repair chance: 0.0
> Replicate on write: false
> Bloom Filter FP chance: default
> Built indexes: []
> Compaction Strategy: org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy
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[jira] [Commented] (CASSANDRA-4095) Internal error processing
get_slice (NullPointerException)
Posted by "Jonathan Ellis (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-4095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13242359#comment-13242359 ]
Jonathan Ellis commented on CASSANDRA-4095:
-------------------------------------------
I wrote the patch against 1.1, which already has that method. Sorry for not being clear.
> Internal error processing get_slice (NullPointerException)
> ----------------------------------------------------------
>
> Key: CASSANDRA-4095
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4095
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.0.2
> Environment: Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
> Reporter: John Laban
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 1.0.9, 1.1.0
>
> Attachments: 4095.txt, 4095_v2.txt
>
>
> I get this pretty regularly. It seems to happen transiently on multiple nodes in my cluster, every so often, and goes away.
> ERROR [Thrift:45] 2012-03-26 19:59:12,024 Cassandra.java (line 3041) Internal error processing get_slice
> java.lang.NullPointerException
> at org.apache.cassandra.db.SliceFromReadCommand.maybeGenerateRetryCommand(SliceFromReadCommand.java:76)
> at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:724)
> at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:564)
> at org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:128)
> at org.apache.cassandra.thrift.CassandraServer.getSlice(CassandraServer.java:283)
> at org.apache.cassandra.thrift.CassandraServer.multigetSliceInternal(CassandraServer.java:365)
> at org.apache.cassandra.thrift.CassandraServer.get_slice(CassandraServer.java:326)
> at org.apache.cassandra.thrift.Cassandra$Processor$get_slice.process(Cassandra.java:3033)
> at org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2889)
> at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187)
> 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)
> The line in question is (I think) the one below, so it looks like the column family reference for a row can sometimes be null?
> int liveColumnsInRow = row != null ? row.cf.getLiveColumnCount() : 0;
> Here is my column family (on 1.0.8):
> ColumnFamily: WorkQueue (Super)
> Key Validation Class: org.apache.cassandra.db.marshal.UTF8Type
> Default column value validator: org.apache.cassandra.db.marshal.UTF8Type
> Columns sorted by: org.apache.cassandra.db.marshal.UTF8Type/org.apache.cassandra.db.marshal.UTF8Type
> Row cache size / save period in seconds / keys to save : 0.0/0/all
> Row Cache Provider: org.apache.cassandra.cache.ConcurrentLinkedHashCacheProvider
> Key cache size / save period in seconds: 0.0/0
> GC grace seconds: 0
> Compaction min/max thresholds: 4/32
> Read repair chance: 0.0
> Replicate on write: false
> Bloom Filter FP chance: default
> Built indexes: []
> Compaction Strategy: org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy
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[jira] [Updated] (CASSANDRA-4095) Internal error processing
get_slice (NullPointerException)
Posted by "Jonathan Ellis (Updated) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-4095?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jonathan Ellis updated CASSANDRA-4095:
--------------------------------------
Attachment: 4095.txt
Thanks for the report, John. I think your analysis is spot on. Patch attached that does not assume row.cf is non-null.
> Internal error processing get_slice (NullPointerException)
> ----------------------------------------------------------
>
> Key: CASSANDRA-4095
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4095
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.0.8
> Environment: Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
> Reporter: John Laban
> Priority: Minor
> Attachments: 4095.txt
>
>
> I get this pretty regularly. It seems to happen transiently on multiple nodes in my cluster, every so often, and goes away.
> ERROR [Thrift:45] 2012-03-26 19:59:12,024 Cassandra.java (line 3041) Internal error processing get_slice
> java.lang.NullPointerException
> at org.apache.cassandra.db.SliceFromReadCommand.maybeGenerateRetryCommand(SliceFromReadCommand.java:76)
> at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:724)
> at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:564)
> at org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:128)
> at org.apache.cassandra.thrift.CassandraServer.getSlice(CassandraServer.java:283)
> at org.apache.cassandra.thrift.CassandraServer.multigetSliceInternal(CassandraServer.java:365)
> at org.apache.cassandra.thrift.CassandraServer.get_slice(CassandraServer.java:326)
> at org.apache.cassandra.thrift.Cassandra$Processor$get_slice.process(Cassandra.java:3033)
> at org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2889)
> at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187)
> 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)
> The line in question is (I think) the one below, so it looks like the column family reference for a row can sometimes be null?
> int liveColumnsInRow = row != null ? row.cf.getLiveColumnCount() : 0;
> Here is my column family (on 1.0.8):
> ColumnFamily: WorkQueue (Super)
> Key Validation Class: org.apache.cassandra.db.marshal.UTF8Type
> Default column value validator: org.apache.cassandra.db.marshal.UTF8Type
> Columns sorted by: org.apache.cassandra.db.marshal.UTF8Type/org.apache.cassandra.db.marshal.UTF8Type
> Row cache size / save period in seconds / keys to save : 0.0/0/all
> Row Cache Provider: org.apache.cassandra.cache.ConcurrentLinkedHashCacheProvider
> Key cache size / save period in seconds: 0.0/0
> GC grace seconds: 0
> Compaction min/max thresholds: 4/32
> Read repair chance: 0.0
> Replicate on write: false
> Bloom Filter FP chance: default
> Built indexes: []
> Compaction Strategy: org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy
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[jira] [Commented] (CASSANDRA-4095) Internal error processing
get_slice (NullPointerException)
Posted by "Vijay (Commented) (JIRA)" <ji...@apache.org>.
[ https://issues.apache.org/jira/browse/CASSANDRA-4095?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13241510#comment-13241510 ]
Vijay commented on CASSANDRA-4095:
----------------------------------
+1
> Internal error processing get_slice (NullPointerException)
> ----------------------------------------------------------
>
> Key: CASSANDRA-4095
> URL: https://issues.apache.org/jira/browse/CASSANDRA-4095
> Project: Cassandra
> Issue Type: Bug
> Components: Core
> Affects Versions: 1.0.2
> Environment: Java(TM) SE Runtime Environment (build 1.6.0_30-b12)
> Reporter: John Laban
> Assignee: Jonathan Ellis
> Priority: Minor
> Fix For: 1.0.9, 1.1.0
>
> Attachments: 4095.txt
>
>
> I get this pretty regularly. It seems to happen transiently on multiple nodes in my cluster, every so often, and goes away.
> ERROR [Thrift:45] 2012-03-26 19:59:12,024 Cassandra.java (line 3041) Internal error processing get_slice
> java.lang.NullPointerException
> at org.apache.cassandra.db.SliceFromReadCommand.maybeGenerateRetryCommand(SliceFromReadCommand.java:76)
> at org.apache.cassandra.service.StorageProxy.fetchRows(StorageProxy.java:724)
> at org.apache.cassandra.service.StorageProxy.read(StorageProxy.java:564)
> at org.apache.cassandra.thrift.CassandraServer.readColumnFamily(CassandraServer.java:128)
> at org.apache.cassandra.thrift.CassandraServer.getSlice(CassandraServer.java:283)
> at org.apache.cassandra.thrift.CassandraServer.multigetSliceInternal(CassandraServer.java:365)
> at org.apache.cassandra.thrift.CassandraServer.get_slice(CassandraServer.java:326)
> at org.apache.cassandra.thrift.Cassandra$Processor$get_slice.process(Cassandra.java:3033)
> at org.apache.cassandra.thrift.Cassandra$Processor.process(Cassandra.java:2889)
> at org.apache.cassandra.thrift.CustomTThreadPoolServer$WorkerProcess.run(CustomTThreadPoolServer.java:187)
> 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)
> The line in question is (I think) the one below, so it looks like the column family reference for a row can sometimes be null?
> int liveColumnsInRow = row != null ? row.cf.getLiveColumnCount() : 0;
> Here is my column family (on 1.0.8):
> ColumnFamily: WorkQueue (Super)
> Key Validation Class: org.apache.cassandra.db.marshal.UTF8Type
> Default column value validator: org.apache.cassandra.db.marshal.UTF8Type
> Columns sorted by: org.apache.cassandra.db.marshal.UTF8Type/org.apache.cassandra.db.marshal.UTF8Type
> Row cache size / save period in seconds / keys to save : 0.0/0/all
> Row Cache Provider: org.apache.cassandra.cache.ConcurrentLinkedHashCacheProvider
> Key cache size / save period in seconds: 0.0/0
> GC grace seconds: 0
> Compaction min/max thresholds: 4/32
> Read repair chance: 0.0
> Replicate on write: false
> Bloom Filter FP chance: default
> Built indexes: []
> Compaction Strategy: org.apache.cassandra.db.compaction.SizeTieredCompactionStrategy
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