I'm not familiar with MongoDB. Perhaps someone else can confirm this for
you.
Yamini Joshi wrote:
So, can I say that if I have a table split across nodes (i.e. num
tablets > 1) and HDFS replication in my system, it is sort of equivalent
to a sharded and replicated mongo architecture?
Best regards,
Yamini Joshi
On Thu, Oct 13, 2016 at 11:06 AM, Josh Elser <josh.el...@gmail.com
<mailto:josh.el...@gmail.com>> wrote:
The Accumulo (Data Center) Replication feature is for having
multiple active Accumulo clusters all containing the same data.
HDFS provides replication as a means for durability of the data it
is storing. The files that Accumulo creates on one HDFS instance are
replicated by HDFS. This does not help if your entire cluster become
unavailable. That is what the data center replication Accumulo
feature solves.
While both can be called "replication", they serve very different
purposes.
Yamini Joshi wrote:
Hello
I was going through some Accumulo docs and found out about
replication.
To enable replication,one needs to make some config settings as
described in
https://github.com/apache/accumulo/blob/master/docs/src/main/asciidoc/chapters/replication.txt
<https://github.com/apache/accumulo/blob/master/docs/src/main/asciidoc/chapters/replication.txt>.
I cannot seem to grasp the difference between this replication
conf and
the replication on HDFS level. What exactly is the use case for
replication? Are the replicated instances visible to the clients?
Best regards,
Yamini Joshi
