You are viewing a plain text version of this content. The canonical link for it is here.
Posted to solr-user@lucene.apache.org by k....@accenture.com on 2015/12/16 03:07:26 UTC
Solr High Availability
Hi Team,
Can you help me in understanding in achieving the Solr High Availability .
Appreciate you have a detail document or Deck on more details.
Thank you
Viswanath Bharathi
Accenture | Delivery Centres for Technology in India
CDC 2, Chennai, India
Mobile: +91 9886259010
www.accenture.com<http://www.accenture.com/> | www.avanade.com<http://www.avanade.com/>
________________________________
This message is for the designated recipient only and may contain privileged, proprietary, or otherwise confidential information. If you have received it in error, please notify the sender immediately and delete the original. Any other use of the e-mail by you is prohibited. Where allowed by local law, electronic communications with Accenture and its affiliates, including e-mail and instant messaging (including content), may be scanned by our systems for the purposes of information security and assessment of internal compliance with Accenture policy.
______________________________________________________________________________________
www.accenture.com
Re: Solr High Availability
Posted by Peter Tan <al...@gmail.com>.
Thanx for the response.
There were few occurrences of our SolrCloud cluster where when a primary
went down in a shard, the replica didn't get promoted which eventually led
to downtime. We had to restart zookeeper services (we have three zookeeper
nodes) to promote the replica into primary.
But I just want to make sure our setup is correct
On Wed, Dec 16, 2015 at 10:01 AM, Upayavira <uv...@odoko.co.uk> wrote:
> If you have two replicas (one leader/one replica) for each shard of your
> collection, and you ensure that no two replicas are on the same node,
> and you have three independent Zookeeper nodes, then yes, you should
> have HA.
>
> Upayavira
>
> On Wed, Dec 16, 2015, at 05:48 PM, Peter Tan wrote:
> > Hi Jack,
> >
> > Appreciate you helping me to clear this up.
> >
> > For replicationFactor = 1, that means only keeping one copy of document
> > in
> > the cluster.
> >
> > Currently, for our SolrCloud setup, we have two replicas (primary and
> > replica) per each shard (total of 5 shards). This should achieve the HA
> > already, correct?
> >
> >
> >
> > On Tue, Dec 15, 2015 at 10:09 PM, Jack Krupansky
> > <ja...@gmail.com>
> > wrote:
> >
> > > There is no HA with a single replica for each shard. Replication factor
> > > must be at least 2 for HA.
> > >
> > > -- Jack Krupansky
> > >
> > > On Wed, Dec 16, 2015 at 12:38 AM, Peter Tan <al...@gmail.com>
> wrote:
> > >
> > > > Hi Jack, What happens when there is only one replica setup?
> > > >
> > > > On Tue, Dec 15, 2015 at 9:32 PM, Jack Krupansky <
> > > jack.krupansky@gmail.com>
> > > > wrote:
> > > >
> > > > > Solr Cloud provides HA when you configure at least two replicas for
> > > each
> > > > > shard and have at least 3 zookeepers. That's it. No deck or detail
> > > > document
> > > > > is needed.
> > > > >
> > > > >
> > > > >
> > > > > -- Jack Krupansky
> > > > >
> > > > > On Tue, Dec 15, 2015 at 9:07 PM, <
> k.viswanath.bharathi@accenture.com>
> > > > > wrote:
> > > > >
> > > > > > Hi Team,
> > > > > >
> > > > > > Can you help me in understanding in achieving the Solr High
> > > > Availability
> > > > > .
> > > > > >
> > > > > > Appreciate you have a detail document or Deck on more details.
> > > > > >
> > > > > > Thank you
> > > > > > Viswanath Bharathi
> > > > > > Accenture | Delivery Centres for Technology in India
> > > > > > CDC 2, Chennai, India
> > > > > > Mobile: +91 9886259010
> > > > > > www.accenture.com<http://www.accenture.com/> | www.avanade.com<
> > > > > > http://www.avanade.com/>
> > > > > >
> > > > > >
> > > > > > ________________________________
> > > > > >
> > > > > > This message is for the designated recipient only and may contain
> > > > > > privileged, proprietary, or otherwise confidential information.
> If
> > > you
> > > > > have
> > > > > > received it in error, please notify the sender immediately and
> delete
> > > > the
> > > > > > original. Any other use of the e-mail by you is prohibited. Where
> > > > allowed
> > > > > > by local law, electronic communications with Accenture and its
> > > > > affiliates,
> > > > > > including e-mail and instant messaging (including content), may
> be
> > > > > scanned
> > > > > > by our systems for the purposes of information security and
> > > assessment
> > > > of
> > > > > > internal compliance with Accenture policy.
> > > > > >
> > > > > >
> > > > >
> > > >
> > >
> ______________________________________________________________________________________
> > > > > >
> > > > > > www.accenture.com
> > > > > >
> > > > >
> > > >
> > >
>
Re: Solr High Availability
Posted by Upayavira <uv...@odoko.co.uk>.
If you have two replicas (one leader/one replica) for each shard of your
collection, and you ensure that no two replicas are on the same node,
and you have three independent Zookeeper nodes, then yes, you should
have HA.
Upayavira
On Wed, Dec 16, 2015, at 05:48 PM, Peter Tan wrote:
> Hi Jack,
>
> Appreciate you helping me to clear this up.
>
> For replicationFactor = 1, that means only keeping one copy of document
> in
> the cluster.
>
> Currently, for our SolrCloud setup, we have two replicas (primary and
> replica) per each shard (total of 5 shards). This should achieve the HA
> already, correct?
>
>
>
> On Tue, Dec 15, 2015 at 10:09 PM, Jack Krupansky
> <ja...@gmail.com>
> wrote:
>
> > There is no HA with a single replica for each shard. Replication factor
> > must be at least 2 for HA.
> >
> > -- Jack Krupansky
> >
> > On Wed, Dec 16, 2015 at 12:38 AM, Peter Tan <al...@gmail.com> wrote:
> >
> > > Hi Jack, What happens when there is only one replica setup?
> > >
> > > On Tue, Dec 15, 2015 at 9:32 PM, Jack Krupansky <
> > jack.krupansky@gmail.com>
> > > wrote:
> > >
> > > > Solr Cloud provides HA when you configure at least two replicas for
> > each
> > > > shard and have at least 3 zookeepers. That's it. No deck or detail
> > > document
> > > > is needed.
> > > >
> > > >
> > > >
> > > > -- Jack Krupansky
> > > >
> > > > On Tue, Dec 15, 2015 at 9:07 PM, <k....@accenture.com>
> > > > wrote:
> > > >
> > > > > Hi Team,
> > > > >
> > > > > Can you help me in understanding in achieving the Solr High
> > > Availability
> > > > .
> > > > >
> > > > > Appreciate you have a detail document or Deck on more details.
> > > > >
> > > > > Thank you
> > > > > Viswanath Bharathi
> > > > > Accenture | Delivery Centres for Technology in India
> > > > > CDC 2, Chennai, India
> > > > > Mobile: +91 9886259010
> > > > > www.accenture.com<http://www.accenture.com/> | www.avanade.com<
> > > > > http://www.avanade.com/>
> > > > >
> > > > >
> > > > > ________________________________
> > > > >
> > > > > This message is for the designated recipient only and may contain
> > > > > privileged, proprietary, or otherwise confidential information. If
> > you
> > > > have
> > > > > received it in error, please notify the sender immediately and delete
> > > the
> > > > > original. Any other use of the e-mail by you is prohibited. Where
> > > allowed
> > > > > by local law, electronic communications with Accenture and its
> > > > affiliates,
> > > > > including e-mail and instant messaging (including content), may be
> > > > scanned
> > > > > by our systems for the purposes of information security and
> > assessment
> > > of
> > > > > internal compliance with Accenture policy.
> > > > >
> > > > >
> > > >
> > >
> > ______________________________________________________________________________________
> > > > >
> > > > > www.accenture.com
> > > > >
> > > >
> > >
> >
Re: Solr High Availability
Posted by Peter Tan <al...@gmail.com>.
Hi Jack,
Appreciate you helping me to clear this up.
For replicationFactor = 1, that means only keeping one copy of document in
the cluster.
Currently, for our SolrCloud setup, we have two replicas (primary and
replica) per each shard (total of 5 shards). This should achieve the HA
already, correct?
On Tue, Dec 15, 2015 at 10:09 PM, Jack Krupansky <ja...@gmail.com>
wrote:
> There is no HA with a single replica for each shard. Replication factor
> must be at least 2 for HA.
>
> -- Jack Krupansky
>
> On Wed, Dec 16, 2015 at 12:38 AM, Peter Tan <al...@gmail.com> wrote:
>
> > Hi Jack, What happens when there is only one replica setup?
> >
> > On Tue, Dec 15, 2015 at 9:32 PM, Jack Krupansky <
> jack.krupansky@gmail.com>
> > wrote:
> >
> > > Solr Cloud provides HA when you configure at least two replicas for
> each
> > > shard and have at least 3 zookeepers. That's it. No deck or detail
> > document
> > > is needed.
> > >
> > >
> > >
> > > -- Jack Krupansky
> > >
> > > On Tue, Dec 15, 2015 at 9:07 PM, <k....@accenture.com>
> > > wrote:
> > >
> > > > Hi Team,
> > > >
> > > > Can you help me in understanding in achieving the Solr High
> > Availability
> > > .
> > > >
> > > > Appreciate you have a detail document or Deck on more details.
> > > >
> > > > Thank you
> > > > Viswanath Bharathi
> > > > Accenture | Delivery Centres for Technology in India
> > > > CDC 2, Chennai, India
> > > > Mobile: +91 9886259010
> > > > www.accenture.com<http://www.accenture.com/> | www.avanade.com<
> > > > http://www.avanade.com/>
> > > >
> > > >
> > > > ________________________________
> > > >
> > > > This message is for the designated recipient only and may contain
> > > > privileged, proprietary, or otherwise confidential information. If
> you
> > > have
> > > > received it in error, please notify the sender immediately and delete
> > the
> > > > original. Any other use of the e-mail by you is prohibited. Where
> > allowed
> > > > by local law, electronic communications with Accenture and its
> > > affiliates,
> > > > including e-mail and instant messaging (including content), may be
> > > scanned
> > > > by our systems for the purposes of information security and
> assessment
> > of
> > > > internal compliance with Accenture policy.
> > > >
> > > >
> > >
> >
> ______________________________________________________________________________________
> > > >
> > > > www.accenture.com
> > > >
> > >
> >
>
Re: Solr High Availability
Posted by Jack Krupansky <ja...@gmail.com>.
There is no HA with a single replica for each shard. Replication factor
must be at least 2 for HA.
-- Jack Krupansky
On Wed, Dec 16, 2015 at 12:38 AM, Peter Tan <al...@gmail.com> wrote:
> Hi Jack, What happens when there is only one replica setup?
>
> On Tue, Dec 15, 2015 at 9:32 PM, Jack Krupansky <ja...@gmail.com>
> wrote:
>
> > Solr Cloud provides HA when you configure at least two replicas for each
> > shard and have at least 3 zookeepers. That's it. No deck or detail
> document
> > is needed.
> >
> >
> >
> > -- Jack Krupansky
> >
> > On Tue, Dec 15, 2015 at 9:07 PM, <k....@accenture.com>
> > wrote:
> >
> > > Hi Team,
> > >
> > > Can you help me in understanding in achieving the Solr High
> Availability
> > .
> > >
> > > Appreciate you have a detail document or Deck on more details.
> > >
> > > Thank you
> > > Viswanath Bharathi
> > > Accenture | Delivery Centres for Technology in India
> > > CDC 2, Chennai, India
> > > Mobile: +91 9886259010
> > > www.accenture.com<http://www.accenture.com/> | www.avanade.com<
> > > http://www.avanade.com/>
> > >
> > >
> > > ________________________________
> > >
> > > This message is for the designated recipient only and may contain
> > > privileged, proprietary, or otherwise confidential information. If you
> > have
> > > received it in error, please notify the sender immediately and delete
> the
> > > original. Any other use of the e-mail by you is prohibited. Where
> allowed
> > > by local law, electronic communications with Accenture and its
> > affiliates,
> > > including e-mail and instant messaging (including content), may be
> > scanned
> > > by our systems for the purposes of information security and assessment
> of
> > > internal compliance with Accenture policy.
> > >
> > >
> >
> ______________________________________________________________________________________
> > >
> > > www.accenture.com
> > >
> >
>
Re: Solr High Availability
Posted by Peter Tan <al...@gmail.com>.
Hi Jack, What happens when there is only one replica setup?
On Tue, Dec 15, 2015 at 9:32 PM, Jack Krupansky <ja...@gmail.com>
wrote:
> Solr Cloud provides HA when you configure at least two replicas for each
> shard and have at least 3 zookeepers. That's it. No deck or detail document
> is needed.
>
>
>
> -- Jack Krupansky
>
> On Tue, Dec 15, 2015 at 9:07 PM, <k....@accenture.com>
> wrote:
>
> > Hi Team,
> >
> > Can you help me in understanding in achieving the Solr High Availability
> .
> >
> > Appreciate you have a detail document or Deck on more details.
> >
> > Thank you
> > Viswanath Bharathi
> > Accenture | Delivery Centres for Technology in India
> > CDC 2, Chennai, India
> > Mobile: +91 9886259010
> > www.accenture.com<http://www.accenture.com/> | www.avanade.com<
> > http://www.avanade.com/>
> >
> >
> > ________________________________
> >
> > This message is for the designated recipient only and may contain
> > privileged, proprietary, or otherwise confidential information. If you
> have
> > received it in error, please notify the sender immediately and delete the
> > original. Any other use of the e-mail by you is prohibited. Where allowed
> > by local law, electronic communications with Accenture and its
> affiliates,
> > including e-mail and instant messaging (including content), may be
> scanned
> > by our systems for the purposes of information security and assessment of
> > internal compliance with Accenture policy.
> >
> >
> ______________________________________________________________________________________
> >
> > www.accenture.com
> >
>
Re: Solr High Availability
Posted by Jack Krupansky <ja...@gmail.com>.
Solr Cloud provides HA when you configure at least two replicas for each
shard and have at least 3 zookeepers. That's it. No deck or detail document
is needed.
-- Jack Krupansky
On Tue, Dec 15, 2015 at 9:07 PM, <k....@accenture.com> wrote:
> Hi Team,
>
> Can you help me in understanding in achieving the Solr High Availability .
>
> Appreciate you have a detail document or Deck on more details.
>
> Thank you
> Viswanath Bharathi
> Accenture | Delivery Centres for Technology in India
> CDC 2, Chennai, India
> Mobile: +91 9886259010
> www.accenture.com<http://www.accenture.com/> | www.avanade.com<
> http://www.avanade.com/>
>
>
> ________________________________
>
> This message is for the designated recipient only and may contain
> privileged, proprietary, or otherwise confidential information. If you have
> received it in error, please notify the sender immediately and delete the
> original. Any other use of the e-mail by you is prohibited. Where allowed
> by local law, electronic communications with Accenture and its affiliates,
> including e-mail and instant messaging (including content), may be scanned
> by our systems for the purposes of information security and assessment of
> internal compliance with Accenture policy.
>
> ______________________________________________________________________________________
>
> www.accenture.com
>