writeToWAL for increment operation

[Dmitri Pavlovski <dm...@yahoo-inc.com>]

Hi,

I have a stupid question on how HBase RPC works. I think a Writable  
object is serialized/deserialized with write/read functions, but it  
looks like I miss something.

I use 0.90 call

HTable.increment(Increment increment)

to increment several columns within a single row. I do not need to  
write to the WAL, so I call

  increment.setWriteToWAL(false);

but I still see WAL edits on the regionserver.

I do not see any serialization/deserialization of writeToWAL in  
org.apache.hadoop.hbase.client.Increment.java (functions void  
readFields(final DataInput in) and void write(final DataOutput out) )

How does the client send writeToWAL to the server? Do I miss some  
basics on how RPC works?

Thanks,
Dmitri

Re: writeToWAL for increment operation

[Ted Yu <yu...@gmail.com>]

Please file a JIRA for this finding.

On Thu, Feb 24, 2011 at 12:52 PM, Dmitri Pavlovski <dm...@yahoo-inc.com>wrote:

> Hi,
>
> I have a stupid question on how HBase RPC works. I think a Writable object
> is serialized/deserialized with write/read functions, but it looks like I
> miss something.
>
> I use 0.90 call
>
> HTable.increment(Increment increment)
>
> to increment several columns within a single row. I do not need to write to
> the WAL, so I call
>
>  increment.setWriteToWAL(false);
>
> but I still see WAL edits on the regionserver.
>
> I do not see any serialization/deserialization of writeToWAL in
> org.apache.hadoop.hbase.client.Increment.java (functions void
> readFields(final DataInput in) and void write(final DataOutput out) )
>
> How does the client send writeToWAL to the server? Do I miss some basics on
> how RPC works?
>
> Thanks,
> Dmitri
>