On Sat, Jun 16, 2012 at 5:33 AM, Otis Gospodnetic
otis_gospodne...@yahoo.com wrote:
And here is one more Q.
* Imagine a client is adding documents and, for simplicity, imagine SolrCloud
routes all these documents to the same shard, call it S.
* Imagine that both the 7-node and the 3-node
On Jun 15, 2012, at 10:33 PM, Otis Gospodnetic wrote:
However, if my half brain understands what split brain is then I think that's
not a completely true claim because one can get unlucky and get a SolrCloud
cluster partitioned in a way that one or even all partitions reject indexing
(and
-
From: Mark Miller markrmil...@gmail.com
To: solr-user solr-user@lucene.apache.org
Cc:
Sent: Monday, June 18, 2012 11:05 AM
Subject: Re: SolrCloud and split-brain
On Jun 15, 2012, at 10:33 PM, Otis Gospodnetic wrote:
However, if my half brain understands what split brain is then I think
So then the Q becomes: if we have 10 ZK nodes and they split in 5 5
nodes, does that mean neither side will have quorum because having 10 ZKs
was a bad number of ZKs to have to begin with?
Right - from the ZooKeeper admin guide, under Clustered Setup:
Because Zookeeper requires a majority,
Hi,
How exactly does SolrCloud handle split brain situations?
Imagine a cluster of 10 nodes.
Imagine 3 of them being connected to the network by some switch and imagine the
out port of this switch dies.
When that happens, these 3 nodes will be disconnected from the other 7 nodes
and we'll have
On 6/15/2012 12:49 PM, Otis Gospodnetic wrote:
Hi,
How exactly does SolrCloud handle split brain situations?
Imagine a cluster of 10 nodes.
Imagine 3 of them being connected to the network by some switch and imagine
the out port of this switch dies.
When that happens, these 3 nodes
are no longer
accepted, because we may have a stale cluster view and not know it for a long
period of time.
On Jun 15, 2012, at 12:49 PM, Otis Gospodnetic wrote:
Hi,
How exactly does SolrCloud handle split brain situations?
Imagine a cluster of 10 nodes.
Imagine 3 of them being connected
rejection or something else?) because neither sees 2.5 ZK nodes?
Thanks,
Otis
Performance Monitoring for Solr / ElasticSearch / HBase -
http://sematext.com/spm
On Jun 15, 2012, at 12:49 PM, Otis Gospodnetic wrote:
Hi,
How exactly does SolrCloud handle split brain situations
On Jun 15, 2012, at 1:44 PM, Otis Gospodnetic wrote:
Does this work even when outside clients (apps for indexing or searching)
send their requests directly to individual nodes?
Let's use the example from my email where we end up with 2 groups of nodes:
7-node group with 2 ZK nodes on the
Ola,
Thanks Mark!
Does this work even when outside clients (apps for indexing or searching)
send their requests directly to individual nodes?
Let's use the example from my email where we end up with 2 groups of
nodes: 7-node group with 2 ZK nodes on the same network and 3-node group
On Jun 15, 2012, at 2:12 PM, Otis Gospodnetic wrote:
Makes sense. Do responses carry something to alert the client that
something is rotten in the state of cluster?
No, I don't think so - we should probably add that to the header similar to how
I assume partial results will work.
Feel
Thanks Mark, will open an issue in a bit.
But I think the following is the real meat of the Q about split brain and
SolrCloud, especially when it comes to how indexing is handled during split
brain:
Does this work even when outside clients (apps for indexing or searching)
send
On Jun 15, 2012, at 3:21 PM, Otis Gospodnetic wrote:
Thanks Mark, will open an issue in a bit.
But I think the following is the real meat of the Q about split brain and
SolrCloud, especially when it comes to how indexing is handled during split
brain:
Does this work even when
: Friday, June 15, 2012 5:07 PM
Subject: Re: SolrCloud and split-brain
On Jun 15, 2012, at 3:21 PM, Otis Gospodnetic wrote:
Thanks Mark, will open an issue in a bit.
But I think the following is the real meat of the Q about split brain and
SolrCloud, especially when it comes to how
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