Andrew Wharton wrote:
https://issues.apache.org/jira/browse/HADOOP-4539
I am curious about the state of this fix. It is listed as
"Incompatible", but is resolved and committed (according to the
comments). Is the backup name node going to make it into 0.21? Will it
remove the SPOF for HDFS? And if so, what is the proposed release
timeline for 0.21?
The way to deal with HA -which the BackupNode doesn't promise- is to get
involved in developing and testing the leading edge source tree.
The 0.21 cutoff is approaching, BackupNode is in there, but it needs a
lot more tests. If you want to aid the development, helping to get more
automated BackupNode tests in there (indeed, tests that simulate more
complex NN failures, like a corrupt EditLog) would go a long way.
-steve
