Thanks Evan for quick response.
On 10/20/16 10:19 AM, Tom Evans wrote:
On Thu, Oct 20, 2016 at 5:38 PM, Rallavagu <rallav...@gmail.com> wrote:
Solr 5.4.1 cloud with embedded jetty
Looking for some ideas around offline indexing where an independent node
will be indexed offline (not in the cloud) and added to the cloud to become
leader so other cloud nodes will get replicated. Wonder if this is possible
without interrupting the live service. Thanks.
How we do this, to reindex collection "foo":
1) First, collection "foo" should be an alias to the real collection,
eg "foo_1" aliased to "foo"
2) Have a node "node_i" in the cluster that is used for indexing. It
doesn't hold any shards of any collections
So, a node is part of the cluster but no collections? How can we add a
node to cloud without active participation?
3) Use collections API to create collection "foo_2", with however many
shards required, but all placed on "node_i"
4) Index "foo_2" with new data with DIH or direct indexing to "node_1".
5) Use collections API to expand "foo_2" to all the nodes/replicas
that it should be on
Could you please point me to documentation on how to do this? I am
referring to this doc
https://cwiki.apache.org/confluence/display/solr/Collections+API. But,
it has many options and honestly not sure which one would be useful in
this case.
Thanks
6) Remove "foo_2" from "node_i"
7) Verify contents of "foo_2" are correct
8) Use collections API to change alias for "foo" to "foo_2"
9) Remove "foo_1" collection once happy
This avoids indexing overwhelming the performance of the cluster (or
any nodes in the cluster that receive queries), and can be performed
with zero downtime or config changes on the clients.
Cheers
Tom
