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From Jonathan Ellis <jbel...@gmail.com>
Subject Re: 2 problems running Cassandra as a developper
Date Sat, 14 Nov 2009 15:44:25 GMT
More here: http://wiki.apache.org/cassandra/HowToContribute

On Sat, Nov 14, 2009 at 9:43 AM, Jonathan Ellis <jbellis@gmail.com> wrote:
> ant test
> nosetests
>
> On Sat, Nov 14, 2009 at 9:12 AM, Paul Sabou <paul.sabou@gmail.com> wrote:
>> Hi,
>>
>> Thank you for your quick answer. Now it works. You are perfectly right.
>>
>> On Sat, Nov 14, 2009 at 3:23 PM, Jonathan Ellis <jbellis@gmail.com> wrote:
>>
>>> first just get it working: ant; bin/cassandra -f
>>>
>>> the EOF during recovery looks like you are trying to run trunk against
>>> 0.4 commitlog files, which doesn't work (flush the 0.4 install first
>>> to clean out commit logs)
>>>
>>
>>
>> What happened :
>> (1) cassandra uses two places to store stuff (log's, commit logs, etc.) :
>> - "/var/lib/cassandra"
>> - "/var/log/cassandra"
>> (2) before downloading the trunk I have installed the cassandra binary
>> (version 0.4) and runned it
>> (3) cassandra (0.4) dumbed some commit logs in those directories
>> (4) i downloaded the source files from trunk that belong to a version > 0.4
>> (5) when I tried to run it from eclipse (from the main class) it tried to
>> reload the commit logs from the two directories ("/var/lib/cassandra" and
>> "/var/log/cassndra") but because the log files had an old format (0.4
>> format) => it crashed
>>
>> After i have deleted the commit log files I can start it from main. Great.
>>
>> What can I do to run the tests?
>>
>>
>> best regards
>> Paul.
>>
>>
>>
>>>
>>> On Sat, Nov 14, 2009 at 8:10 AM, Paul Sabou <paul.sabou@gmail.com> wrote:
>>> > Hi,
>>> >
>>> > Thank you for the advice. I have reimported the Eclipse project as a
>>> > standard JAVA project and builded it again with ant and both problems
>>> still
>>> > persist.
>>> >
>>> >
>>> > In the first case (not beeing able to run from main) it seems that it is
>>> > missing some files from where it want to deserialise something
>>> > (I assume the RecoveryManager -> CommitLog looks for some log files that
>>> > store serialized objects) and it seems that the log files are not there.
>>> >
>>> >
>>> > What can I do to make it work? Should I try another IDE (like Idea) or
>>> what?
>>> > It seems to be a rather trivial problem and any new developper interested
>>> in
>>> > Cassandra will run in the same problems when trying to run it in
>>> > Eclipse/Linux.
>>> >
>>> > Any help/suggestion is appreciated.
>>> >
>>> > best regards
>>> > Paul.
>>> >
>>> >
>>> >
>>> > On Sat, Nov 14, 2009 at 2:06 PM, Jonathan Ellis <jbellis@gmail.com>
>>> wrote:
>>> >
>>> >> It's not a maven project.  It just has a pom.xml to help other project
>>> >> that do use maven and want cassandra as a dependency.  Looks like
>>> >> importing it as a maven project results in an incomplete build.
>>> >>
>>> >> On Sat, Nov 14, 2009 at 6:01 AM, Paul Sabou <paul.sabou@gmail.com>
>>> wrote:
>>> >> > Hi,
>>> >> >
>>> >> > I'am new to Cassandra. I'am trying to run it in Eclipse and I seems
to
>>> >> > fail because some trivial reasons.
>>> >> >
>>> >> > I have an Ubuntu 9.04 and I use MyEclipse.
>>> >> > I have checked out Cassandra from SVN and after I have installed
>>> >> > thrift I could run the
>>> >> > nosetests script succesfully.
>>> >> >
>>> >> > I have imported the trunk folder into MyEclipse with the following
>>> steps
>>> >> :
>>> >> > (1) runned "mvn eclipse:eclipse" in the trunk folder
>>> >> > (2) imported the project as an existing maven project
>>> >> >
>>> >> > and everything is ok up to here.
>>> >> >
>>> >> > I want to do two things now with the Cassandra project (that don't
>>> >> > work) in MyEclipse :
>>> >> >
>>> >> > (1) I want to run it from main :
>>> >> > - I followed the IDE instructions from
>>> >> > http://wiki.apache.org/cassandra/HowToContribute
>>> >> > running  "org.apache.cassandra.service.CassandraDaemon" class
 with
>>> >> > the following VM arguments : "-ea -Xmx1G -Dstorage-config=conf
>>> >> > -Dcassandra-foreground"
>>> >> > - I get the following stack trace :
>>> >> >
>>> >> > --------------------------------------------
>>> >> > Exception encountered during startup.
>>> >> > java.io.EOFException
>>> >> >        at java.io.DataInputStream.readFully(DataInputStream.java:180)
>>> >> >        at java.io.DataInputStream.readUTF(DataInputStream.java:592)
>>> >> >        at java.io.DataInputStream.readUTF(DataInputStream.java:547)
>>> >> >        at
>>> >>
>>> org.apache.cassandra.db.ColumnFamilySerializer.readComparator(ColumnFamilySerializer.java:115)
>>> >> >        at
>>> >>
>>> org.apache.cassandra.db.ColumnFamilySerializer.deserialize(ColumnFamilySerializer.java:98)
>>> >> >        at
>>> >>
>>> org.apache.cassandra.db.RowMutationSerializer.defreezeTheMaps(RowMutation.java:310)
>>> >> >        at
>>> >>
>>> org.apache.cassandra.db.RowMutationSerializer.deserialize(RowMutation.java:320)
>>> >> >        at
>>> >>
>>> org.apache.cassandra.db.RowMutationSerializer.deserialize(RowMutation.java:1)
>>> >> >        at
>>> org.apache.cassandra.db.CommitLog.recover(CommitLog.java:327)
>>> >> >        at
>>> >>
>>> org.apache.cassandra.db.RecoveryManager.doRecovery(RecoveryManager.java:65)
>>> >> >        at
>>> >>
>>> org.apache.cassandra.service.CassandraDaemon.setup(CassandraDaemon.java:90)
>>> >> >        at
>>> >>
>>> org.apache.cassandra.service.CassandraDaemon.main(CassandraDaemon.java:166)
>>> >> >
>>> >> > ----------------------------------------------
>>> >> >
>>> >> > It seems that the RecoveryManager doesn't work as it was expected
=>
>>> >> > if I comment the line 90 in CassandraDaemon.java
>>> >> > "recoveryMgr.doRecovery();" everything starts up correctly.
>>> >> >
>>> >> > I think I'am missing some config file or something similar. Can
you
>>> >> > please tell me what should I do?
>>> >> >
>>> >> > (2) I want to run the test suite :
>>> >> > - When I run the test suite many tests fail with something like
:
>>> >> > -----------------------------------------------
>>> >> > java.lang.NoClassDefFoundError: Could not initialize class
>>> >> > org.apache.cassandra.config.DatabaseDescriptor
>>> >> >        at
>>> >> org.apache.cassandra.db.Table$TableMetadata.<clinit>(Table.java:70)
>>> >> >        at org.apache.cassandra.db.Table.<init>(Table.java:354)
>>> >> >        at org.apache.cassandra.db.Table.open(Table.java:184)
>>> >> >        at
>>> >>
>>> org.apache.cassandra.db.RemoveSuperColumnTest.testRemoveSuperColumn(RemoveSuperColumnTest.java:43)
>>> >> >        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
>>> >>
>>> org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
>>> >> >        at
>>> >>
>>> org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
>>> >> >        at
>>> >>
>>> org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
>>> >> >        at
>>> >>
>>> org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
>>> >> >        at
>>> >>
>>> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
>>> >> >        at
>>> >>
>>> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
>>> >> >        at
>>> >>
>>> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
>>> >> >        at
>>> >>
>>> org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:44)
>>> >> >        at
>>> >> org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
>>> >> >        at
>>> org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
>>> >> >        at
>>> >> org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
>>> >> >        at
>>> >>
>>> org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
>>> >> >        at
>>> >>
>>> org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
>>> >> >        at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
>>> >> >        at
>>> >>
>>> org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
>>> >> >        at
>>> >>
>>> org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
>>> >> >        at
>>> >>
>>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
>>> >> >        at
>>> >>
>>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
>>> >> >        at
>>> >>
>>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
>>> >> >        at
>>> >>
>>> org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
>>> >> > -----------------------------------------------
>>> >> >
>>> >> >
>>> >> > I think that this is also my fault for not putting the right config
>>> >> > file in the right place. Can you please tell me what to do?
>>> >> >
>>> >> >
>>> >> > best regards
>>> >> > Paul.
>>> >> >
>>> >>
>>> >
>>>
>>
>

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