I just need a statement if it makes sense to use ephemeral storage for
ZK at all (in conjunction with Hbase if the answer depends on the use case)?
Any help is appreciated.
Thanks in advance
Yves
On 19.07.2011 19:37, Yves Langisch wrote:
Hi,
I plan to setup a HBase installation on EC2. As recommended I therefore want to
setup a zookeeper ensemble with 3 nodes but I'm not sure what kind of storage
I've to choose for the two zk directories (dataDir and dataLogDir). Do this two
directories need to be on a persistent storage which survives a node crash? Or
does an ephemeral storage device suffice since a failed node which is restarted
is being synchronized with the other two nodes anyway? And what happens when I
restart the whole zk ensemble with ephemeral storage which means there is no zk
data available anymore after booting up? Any impact on the Hbase cluster?
I've read through the documentation but I was not able to answer those
questions.
Thanks
Yves
