the config format changed. now you need to specify the cfname as an attribute:
<ColumnFamily Index="Name" Name="Standard1"/>
-Jonathan
On Wed, Mar 11, 2009 at 3:52 PM, Jiansheng Huang <[email protected]> wrote:
>
>
> ---------- Forwarded message ----------
> From: Jiansheng Huang <[email protected]>
> Date: Wed, Mar 11, 2009 at 2:49 PM
> Subject: NPE in apache cassandra
> To: [email protected], Avinash Lakshman
> <[email protected]>, Prashant Malik <[email protected]>
> Cc: [email protected]
>
>
> Hi folks, I checked out the new code from apache and compiled it. When I
> start up the server with a clean installation base (i.e., without using any
> system/user data from previous installation),
> I got the following.
>
> UNCAUGHT EXCEPTION IN main()
> java.lang.NullPointerException
> at java.io.DataOutputStream.writeUTF(DataOutputStream.java:347)
> at java.io.DataOutputStream.writeUTF(DataOutputStream.java:323)
> at
> org.apache.cassandra.db.Table$TableMetadataSerializer.serialize(Table.java:254)
> at
> org.apache.cassandra.db.Table$TableMetadataSerializer.serialize(Table.java:244)
> at org.apache.cassandra.db.Table$TableMetadata.apply(Table.java:209)
> at org.apache.cassandra.db.DBManager.storeMetadata(DBManager.java:150)
> at org.apache.cassandra.db.DBManager.<init>(DBManager.java:102)
> at org.apache.cassandra.db.DBManager.instance(DBManager.java:61)
> at
> org.apache.cassandra.service.StorageService.start(StorageService.java:465)
> at
> org.apache.cassandra.service.CassandraServer.start(CassandraServer.java:110)
> at
> org.apache.cassandra.service.CassandraServer.main(CassandraServer.java:1078)
> Disconnected from the target VM, address: '127.0.0.1:45693', transport:
> 'socket'
>
> I did some debugging and found that in the following code, the first entry
> in cfNames is always null. Is it safe to say that if cfName is null, then we
> don't want to do the writings?
>
> public void serialize(TableMetadata tmetadata, DataOutputStream dos) throws
> IOException
> {
> int size = tmetadata.cfIdMap_.size();
> dos.writeInt(size);
> Set<String> cfNames = tmetadata.cfIdMap_.keySet();
>
> for ( String cfName : cfNames )
> {
> dos.writeUTF(cfName);
> dos.writeInt( tmetadata.cfIdMap_.get(cfName).intValue() );
> dos.writeUTF(tmetadata.getColumnFamilyType(cfName));
> }
> }
>
> A related question I have is what's the procedure for us to check in code? I
> have made some changes for adding latency counters in the server and
> exposing them through http. Would be good to check in the changes and minor
> fixes so that I don't have to risk of losing them ...
>
> Thanks,
>
> Jiansheng
>
>
>
>
