Ok, I'll bite.
Why would you want to use a block size of > 2GB?
> Date: Mon, 18 Oct 2010 21:33:34 +1100
> Subject: BUG: Anyone use block size more than 2GB before?
> From: eltonsky9...@gmail.com
> To: common-user@hadoop.apache.org
>
> Hello,
>
> In
> hdfs.org.apache.hadoop.hdfs.DFSClient<eclipse-javadoc:%E2%98%82=HadoopSrcCode/src%3Chdfs.org.apache.hadoop.hdfs%7BDFSClient.java%E2%98%83DFSClient>
> .DFSOutputStream<eclipse-javadoc:%E2%98%82=HadoopSrcCode/src%3Chdfs.org.apache.hadoop.hdfs%7BDFSClient.java%E2%98%83DFSClient%E2%98%83DFSOutputStream>.writeChunk(byte[]
> b, int offset, int len, byte[] checksum)
> The second last line:
>
> int psize = Math.min((int)(blockSize-bytesCurBlock), writePacketSize);
>
> When I use blockSize bigger than 2GB, which is out of the boundary of
> integer something weird would happen. For example, for a 3GB block it will
> create more than 2Million packets.
>
> Anyone noticed this before?
>
> Elton
