cassandra-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Jonathan Ellis <jbel...@gmail.com>
Subject Re: Remove not working for me
Date Fri, 09 Oct 2009 01:37:22 GMT
Yes, that's a bug all right.

Is this reproducible when you start with an empty database?

On Thu, Oct 8, 2009 at 7:53 PM, Ramzi Rabah <rrabah@playdom.com> wrote:
> Hi Jonathan thanks a lot for the quick response :) here is the error
> in the server log
>
> DEBUG [pool-1-thread-4] 2009-10-08 20:24:17,428 StorageProxy.java
> (line 515) weakreadlocal reading
> SliceFromReadCommand(table='Keyspace1', key='user1',
> column_parent='QueryPath(columnFamilyName='Datastore',
> superColumnName='[B@1a5e65f', columnName='null')', start='',
> finish='', reversed=false, count=3)
> ERROR [pool-1-thread-4] 2009-10-08 20:24:17,430 Cassandra.java (line
> 657) Internal error processing get_slice
> java.lang.AssertionError
>       at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1347)
>       at org.apache.cassandra.db.ColumnFamilyStore.getColumnFamily(ColumnFamilyStore.java:1325)
>       at org.apache.cassandra.db.Table.getRow(Table.java:590)
>       at org.apache.cassandra.db.SliceFromReadCommand.getRow(SliceFromReadCommand.java:59)
>       at org.apache.cassandra.service.StorageProxy.weakReadLocal(StorageProxy.java:518)
>       at org.apache.cassandra.service.StorageProxy.readProtocol(StorageProxy.java:310)
>       at org.apache.cassandra.service.CassandraServer.readColumnFamily(CassandraServer.java:99)
>       at org.apache.cassandra.service.CassandraServer.getSlice(CassandraServer.java:180)
>       at org.apache.cassandra.service.CassandraServer.multigetSliceInternal(CassandraServer.java:249)
>       at org.apache.cassandra.service.CassandraServer.get_slice(CassandraServer.java:218)
>       at org.apache.cassandra.service.Cassandra$Processor$get_slice.process(Cassandra.java:651)
>       at org.apache.cassandra.service.Cassandra$Processor.process(Cassandra.java:609)
>       at org.apache.thrift.server.TThreadPoolServer$WorkerProcess.run(TThreadPoolServer.java:253)
>       at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
>       at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
>       at java.lang.Thread.run(Thread.java:636)
>
> On Thu, Oct 8, 2009 at 5:41 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
>> "Internal error" usually means you found a bug.  Are there any
>> exceptions in the server log?
>>
>> On Thu, Oct 8, 2009 at 7:33 PM, Ramzi Rabah <rrabah@playdom.com> wrote:
>>> Hello all,
>>>
>>> I am trying to test Cassandra for deploying it in production in our
>>> company, and I am very pleased with the performance of the
>>> reads/writes on Columns. I did run into an issue with the API though
>>> while trying to play with supercolumns. Here is my code:
>>>
>>> // Creating a supercolumn with name = "key" and columns ("value", "created").
>>>        long now = System.currentTimeMillis();
>>>        byte[] keyAsBytes = key.getBytes();
>>>
>>>        ColumnOrSuperColumn colOrSuperCol = new ColumnOrSuperColumn();
>>>        SuperColumn superCol = new SuperColumn();
>>>        colOrSuperCol.setSuper_column(superCol);
>>>        superCol.setName(keyAsBytes);
>>>        List<Column> cols = new ArrayList<Column>();
>>>
>>>        // first the key/value pair
>>>        Column col = new Column();
>>>        col.setName("value".getBytes());
>>>        col.setValue(value);
>>>        cols.add(col);
>>>
>>>        // then the time created
>>>        col = new Column();
>>>        col.setName("created".getBytes());
>>>        col.setValue((now + "").getBytes());
>>>        cols.add(col);
>>>
>>>        superCol.setColumns(cols);
>>>
>>>        Map<String, List<ColumnOrSuperColumn>> map = new
>>> HashMap<String, List<ColumnOrSuperColumn>>();
>>>        List<ColumnOrSuperColumn> list = new ArrayList<ColumnOrSuperColumn>();
>>>        list.add(colOrSuperCol);
>>>        map.put(COLUMN_FAMILY_NAME, list);
>>>
>>>        client.batch_insert(KEYSPACE_NAME, key, map, ConsistencyLevel.ONE);
>>>
>>>
>>> // The GET of the supercolumn
>>>        SlicePredicate predicate = new SlicePredicate(null, new
>>> SliceRange(new byte
>>> [0], new byte[0], false, 2));
>>>        ColumnParent parent = new ColumnParent(COLUMN_FAMILY_NAME,
>>> key.getBytes());
>>>
>>>        List<ColumnOrSuperColumn> columns = null;
>>>            columns = client.get_slice(KEYSPACE_NAME, key,
>>>                    parent, predicate, ConsistencyLevel.ONE);
>>>
>>>
>>> // delete the supercolumn
>>>            client.remove(KEYSPACE_NAME, key,new
>>> ColumnPath(COLUMN_FAMILY_NAME, null, null),
>>> System.currentTimeMillis(),ConsistencyLevel.ONE);
>>>
>>> // Do the get again
>>>
>>> When I try to delete the super column and then I try to read it again,
>>> I get an exception thrown by cassandra
>>>
>>> org.apache.thrift.TApplicationException: Internal error processing get_slice
>>>        at org.apache.thrift.TApplicationException.read(TApplicationException.java:107)
>>>        at org.apache.cassandra.service.Cassandra$Client.recv_get_slice(Cassandra.java:171)
>>>        at org.apache.cassandra.service.Cassandra$Client.get_slice(Cassandra.java:150)
>>>        at com.playdom.cassandra.datastore.CassandraDataStore.testGet(CassandraDataStore.java:233)
>>>        at com.playdom.cassandra.test.TestCassandraDataStore.testSetAndGetTrial(TestCassandraDataStore.java:58)
>>>        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>>>        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
>>>        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
>>>        at java.lang.reflect.Method.invoke(Method.java:597)
>>>        at junit.framework.TestCase.runTest(TestCase.java:168)
>>>        at junit.framework.TestCase.runBare(TestCase.java:134)
>>>        at junit.framework.TestResult$1.protect(TestResult.java:110)
>>>        at junit.framework.TestResult.runProtected(TestResult.java:128)
>>>        at junit.framework.TestResult.run(TestResult.java:113)
>>>        at junit.framework.TestCase.run(TestCase.java:124)
>>>        at junit.framework.TestSuite.runTest(TestSuite.java:232)
>>>        at junit.framework.TestSuite.run(TestSuite.java:227)
>>>        at junit.textui.TestRunner.doRun(TestRunner.java:116)
>>>        at com.intellij.rt.execution.junit.IdeaTestRunner.doRun(IdeaTestRunner.java:94)
>>>        at junit.textui.TestRunner.doRun(TestRunner.java:109)
>>>        at com.intellij.rt.execution.junit.IdeaTestRunner.startRunnerWithArgs(IdeaTestRunner.java:22)
>>>        at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:118)
>>>        at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:40)
>>>
>>> I was expecting a NotFoundException() since I thought the read will
>>> not find anything. Also anytime I try to rerun this after the delete I
>>> always get an exception in the reads.
>>>
>>> Am I doing something seriously wrong? Thanks a lot for your help
>>>
>>> Ray
>>>
>>
>

Mime
View raw message