Section 2.1.3 says that Hadoop 1.0.4 works with HBase-0.94.x [1]. And
Section 2.1.3.3 says that 1.0.4 has a working durable sync. But when I
check the source code of DFSClient.DFSOutputStream's sync method, I
finds the following javadoc:
/**
* All data is written out to datanodes. It is not guaranteed
* that data has been flushed to persistent store on the
* datanode. Block allocations are persisted on namenode.
*/
So it seems that sync does not support a durable sync. It contradicts
with [1].
Can anybody help me on this confusion? Thanks.
[1] http://hbase.apache.org/book.html
--
Jingguo
