Re: How to configure default replication type?
Hi Tulsi, this sounds more like which replication types are preferably chosen for distributed queries with multiple shards per collection. What I'd like to achieve is creating TLOG replicas as default in the first place. But to be honest, I haven't tried it out since I'm now using a complete different setup where replication isn't necessary. Thank you, Roger On Wed, 10 Apr 2019 at 20:56, Tulsi wrote: > Hi Roger, > Have you tried shards.preference parameter? You can specify the > replica.type > as TLOG or PULL(default is NRT) in solrconfig.xml using this parameter. > > Example: > shards.preference=replica.TLOG > > > Note: earlier this parameter was preferLocalShards which has been > deprecated. > > > > -- > Sent from: http://lucene.472066.n3.nabble.com/Solr-User-f472068.html > -- Roger Lehmann Linux-System-Engineer T: 0351-418 894 –76 *roger.lehm...@offerista.com **https://www.xing.com/profile/Roger_Lehmann8 <https://www.xing.com/profile/Roger_Lehmann8>* * <https://www.offerista.com/>*__ Offerista Group GmbH | Schützenplatz 14 | D - 01067 Dresden Geschäftsführung: Tobias Bräuer, Benjamin Thym Sitz Dresden | Amtsgericht Dresden | HRB 28678
Re: Solr 7 not removing a node completely due to too small thread pool
Oh great, thanks for the hint!
I've upvoted this issue, since I think it might be worth to be able to
configure that (rather low) ThreadPool count.
On Wed, 3 Apr 2019 at 10:23, Shalin Shekhar Mangar
wrote:
> Thanks Roger. This was reported earlier but missed our attention.
>
> The issue is https://issues.apache.org/jira/browse/SOLR-11208
>
> On Tue, Apr 2, 2019 at 5:56 PM Roger Lehmann
> wrote:
>
> > To be more specific: I currently have 19 collections, where each node has
> > exactly one replica per collection. A new node will automatically create
> > new replicas on itself, one for each existing collection (see
> > cluster-policy above).
> > So when removing a node, all 19 collection replicas of it need to be
> > removed. This can't be done in one go due to thread count (parallel
> > synchronous execution) being only 10 and is not scaling up when
> necessary.
> >
> > On Fri, 29 Mar 2019 at 14:20, Roger Lehmann >
> > wrote:
> >
> > > Situation
> > >
> > > I'm currently trying to set up SolrCloud in an AWS Autoscaling Group,
> so
> > > that it can scale dynamically.
> > >
> > > I've also added the following triggers to Solr, so that each node will
> > > have 1 (and only one) replication of each collection:
> > >
> > > {
> > > "set-cluster-policy": [
> > > {"replica": "<2", "shard": "#EACH", "node": "#EACH"}
> > > ],
> > > "set-trigger": [{
> > > "name": "node_added_trigger",
> > > "event": "nodeAdded",
> > > "waitFor": "5s",
> > > "preferredOperation": "ADDREPLICA"
> > > },{
> > > "name": "node_lost_trigger",
> > > "event": "nodeLost",
> > > "waitFor": "120s",
> > > "preferredOperation": "DELETENODE"
> > > }]
> > > }
> > >
> > > This works pretty well. But my problem is that when the a node gets
> > > removed, it doesn't remove all 19 replicas from this node and I have
> > > problems when accessing the "nodes" page:
> > >
> > > [image: enter image description here]
> > > <https://i.stack.imgur.com/QyJrY.png>
> > >
> > > In the logs, this exception occurs:
> > >
> > > Operation deletenode
> > failed:java.util.concurrent.RejectedExecutionException: Task
> >
> org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$$Lambda$45/1104948431@467049e2
> > rejected from
> >
> org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor@773563df
> [Running,
> > pool size = 10, active threads = 10, queued tasks = 0, completed tasks =
> 1]
> > > at
> >
> java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2063)
> > > at
> >
> java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:830)
> > > at
> >
> java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1379)
> > > at
> >
> org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.execute(ExecutorUtil.java:194)
> > > at
> >
> java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
> > > at
> >
> org.apache.solr.cloud.api.collections.DeleteReplicaCmd.deleteCore(DeleteReplicaCmd.java:276)
> > > at
> >
> org.apache.solr.cloud.api.collections.DeleteReplicaCmd.deleteReplica(DeleteReplicaCmd.java:95)
> > > at
> >
> org.apache.solr.cloud.api.collections.DeleteNodeCmd.cleanupReplicas(DeleteNodeCmd.java:109)
> > > at
> >
> org.apache.solr.cloud.api.collections.DeleteNodeCmd.call(DeleteNodeCmd.java:62)
> > > at
> >
> org.apache.solr.cloud.api.collections.OverseerCollectionMessageHandler.processMessage(OverseerCollectionMessageHandler.java:292)
> > > at
> >
> org.apache.solr.cloud.OverseerTaskProcessor$Runner.run(OverseerTaskProcessor.java:496)
> > > at
> >
> org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:209)
> > > at
> >
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> > > at
> >
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> > > at java.lang.Thread.run(Thr
How to configure default replication type?
Hello, I'm using SolrCloud version 7.7.1 and want to try using *only* the TLOG replication type (excepting the leader of course). Where can I configure that as default? Ideally cluster-wide. Can I use the *set-cluster-policy* or *set-trigger *(for my nodeAdded trigger) API calls to define that? Or some configuration file? I haven't found an example or similar configuration hints other than when issuing ADDREPLICA directly in the docs. Thanks for your help! Best, Roger
Re: Solr 7 not removing a node completely due to too small thread pool
To be more specific: I currently have 19 collections, where each node has
exactly one replica per collection. A new node will automatically create
new replicas on itself, one for each existing collection (see
cluster-policy above).
So when removing a node, all 19 collection replicas of it need to be
removed. This can't be done in one go due to thread count (parallel
synchronous execution) being only 10 and is not scaling up when necessary.
On Fri, 29 Mar 2019 at 14:20, Roger Lehmann
wrote:
> Situation
>
> I'm currently trying to set up SolrCloud in an AWS Autoscaling Group, so
> that it can scale dynamically.
>
> I've also added the following triggers to Solr, so that each node will
> have 1 (and only one) replication of each collection:
>
> {
> "set-cluster-policy": [
> {"replica": "<2", "shard": "#EACH", "node": "#EACH"}
> ],
> "set-trigger": [{
> "name": "node_added_trigger",
> "event": "nodeAdded",
> "waitFor": "5s",
> "preferredOperation": "ADDREPLICA"
> },{
> "name": "node_lost_trigger",
> "event": "nodeLost",
> "waitFor": "120s",
> "preferredOperation": "DELETENODE"
> }]
> }
>
> This works pretty well. But my problem is that when the a node gets
> removed, it doesn't remove all 19 replicas from this node and I have
> problems when accessing the "nodes" page:
>
> [image: enter image description here]
> <https://i.stack.imgur.com/QyJrY.png>
>
> In the logs, this exception occurs:
>
> Operation deletenode failed:java.util.concurrent.RejectedExecutionException:
> Task
> org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$$Lambda$45/1104948431@467049e2
> rejected from
> org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor@773563df[Running,
> pool size = 10, active threads = 10, queued tasks = 0, completed tasks = 1]
> at
> java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2063)
> at
> java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:830)
> at
> java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1379)
> at
> org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.execute(ExecutorUtil.java:194)
> at
> java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
> at
> org.apache.solr.cloud.api.collections.DeleteReplicaCmd.deleteCore(DeleteReplicaCmd.java:276)
> at
> org.apache.solr.cloud.api.collections.DeleteReplicaCmd.deleteReplica(DeleteReplicaCmd.java:95)
> at
> org.apache.solr.cloud.api.collections.DeleteNodeCmd.cleanupReplicas(DeleteNodeCmd.java:109)
> at
> org.apache.solr.cloud.api.collections.DeleteNodeCmd.call(DeleteNodeCmd.java:62)
> at
> org.apache.solr.cloud.api.collections.OverseerCollectionMessageHandler.processMessage(OverseerCollectionMessageHandler.java:292)
> at
> org.apache.solr.cloud.OverseerTaskProcessor$Runner.run(OverseerTaskProcessor.java:496)
> at
> org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:209)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748)
>
> Problem description
>
> So, the problem is that it only has a pool size of 10, of which 10 are
> busy and nothing gets queued (synchronous execution). In fact, it really
> only removed 10 replicas and the other 9 replicas stayed there. When
> manually sending the API command to delete this node it works fine, since
> Solr only needs to remove the remaining 9 replicas and everything is good
> again.
> Question
>
> How can I either increase this (small) thread pool size and/or activate
> queueing the remaining deletion tasks? Another solution might be to retry
> the failed task until it succeeds.
>
> Using Solr 7.7.1 on Ubuntu Server installed with the installation script
> from Solr (so I guess it's using Jetty?).
>
> Thanks for your help!
>
Solr 7 not removing a node completely due to too small thread pool
Situation
I'm currently trying to set up SolrCloud in an AWS Autoscaling Group, so
that it can scale dynamically.
I've also added the following triggers to Solr, so that each node will have
1 (and only one) replication of each collection:
{
"set-cluster-policy": [
{"replica": "<2", "shard": "#EACH", "node": "#EACH"}
],
"set-trigger": [{
"name": "node_added_trigger",
"event": "nodeAdded",
"waitFor": "5s",
"preferredOperation": "ADDREPLICA"
},{
"name": "node_lost_trigger",
"event": "nodeLost",
"waitFor": "120s",
"preferredOperation": "DELETENODE"
}]
}
This works pretty well. But my problem is that when the a node gets
removed, it doesn't remove all 19 replicas from this node and I have
problems when accessing the "nodes" page:
[image: enter image description here]
In the logs, this exception occurs:
Operation deletenode
failed:java.util.concurrent.RejectedExecutionException: Task
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor$$Lambda$45/1104948431@467049e2
rejected from
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor@773563df[Running,
pool size = 10, active threads = 10, queued tasks = 0, completed tasks
= 1]
at
java.util.concurrent.ThreadPoolExecutor$AbortPolicy.rejectedExecution(ThreadPoolExecutor.java:2063)
at
java.util.concurrent.ThreadPoolExecutor.reject(ThreadPoolExecutor.java:830)
at
java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1379)
at
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.execute(ExecutorUtil.java:194)
at
java.util.concurrent.AbstractExecutorService.submit(AbstractExecutorService.java:134)
at
org.apache.solr.cloud.api.collections.DeleteReplicaCmd.deleteCore(DeleteReplicaCmd.java:276)
at
org.apache.solr.cloud.api.collections.DeleteReplicaCmd.deleteReplica(DeleteReplicaCmd.java:95)
at
org.apache.solr.cloud.api.collections.DeleteNodeCmd.cleanupReplicas(DeleteNodeCmd.java:109)
at
org.apache.solr.cloud.api.collections.DeleteNodeCmd.call(DeleteNodeCmd.java:62)
at
org.apache.solr.cloud.api.collections.OverseerCollectionMessageHandler.processMessage(OverseerCollectionMessageHandler.java:292)
at
org.apache.solr.cloud.OverseerTaskProcessor$Runner.run(OverseerTaskProcessor.java:496)
at
org.apache.solr.common.util.ExecutorUtil$MDCAwareThreadPoolExecutor.lambda$execute$0(ExecutorUtil.java:209)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Problem description
So, the problem is that it only has a pool size of 10, of which 10 are busy
and nothing gets queued (synchronous execution). In fact, it really only
removed 10 replicas and the other 9 replicas stayed there. When manually
sending the API command to delete this node it works fine, since Solr only
needs to remove the remaining 9 replicas and everything is good again.
Question
How can I either increase this (small) thread pool size and/or activate
queueing the remaining deletion tasks? Another solution might be to retry
the failed task until it succeeds.
Using Solr 7.7.1 on Ubuntu Server installed with the installation script
from Solr (so I guess it's using Jetty?).
Thanks for your help!
