Help needed with Solrcloud error messages

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Help needed with Solrcloud error messages

Webster Homer
We have a number of collections in a Solrcloud.

The cloud has 2 shards each with 2 replicas, 4 nodes. On one of the nodes I am seeing a lot of errors in the log like this:
2019-02-04 20:27:11.831 ERROR (qtp1595212853-88527) [c:sial-catalog-product s:shard1 r:core_node4 x:sial-catalog-product_shard1_replica2] o.a.s.s.HttpSolrCall null:org.apache.solr.common.SolrException: Error reading document with docId 417762
2019-02-04 20:29:49.779 ERROR (qtp1595212853-87296) [c:sial-catalog-product s:shard1 r:core_node4 x:sial-catalog-product_shard1_replica2] o.a.s.s.HttpSolrCall null:org.apache.solr.common.SolrException: Error reading document with docId 417676
2019-02-04 20:23:47.505 ERROR (qtp1595212853-87538) [c:sial-catalog-product s:shard1 r:core_node4 x:sial-catalog-product_shard1_replica2] o.a.s.s.HttpSolrCall null:org.apache.solr.common.SolrException: Error reading document with docId 414871

There are many more than these three. What does this mean?

On the same node I also see problems with 2 other collections:
ehs-catalog-qmdoc_shard1_replica2: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error opening new searcher
sial-catalog-category-180721_shard2_replica_n4: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error opening new searcher

Yet another replica on this node is down

What could cause the error reading docId problems? Why is there a problem opening a new searcher on   2 unrelated collections which just happen to be on the same node? How do I go about diagnosing the problems?

We've been seeing a lot of problems with solrcloud.

We are on Solr 7.2


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Re: Help needed with Solrcloud error messages

Erick Erickson
Your solr logs on the server should have more details than just
the bare error in the full stack trace. Those would help
figure out what's happening.

Best,
Erick

On Mon, Feb 4, 2019 at 3:14 PM Webster Homer
<[hidden email]> wrote:

>
> We have a number of collections in a Solrcloud.
>
> The cloud has 2 shards each with 2 replicas, 4 nodes. On one of the nodes I am seeing a lot of errors in the log like this:
> 2019-02-04 20:27:11.831 ERROR (qtp1595212853-88527) [c:sial-catalog-product s:shard1 r:core_node4 x:sial-catalog-product_shard1_replica2] o.a.s.s.HttpSolrCall null:org.apache.solr.common.SolrException: Error reading document with docId 417762
> 2019-02-04 20:29:49.779 ERROR (qtp1595212853-87296) [c:sial-catalog-product s:shard1 r:core_node4 x:sial-catalog-product_shard1_replica2] o.a.s.s.HttpSolrCall null:org.apache.solr.common.SolrException: Error reading document with docId 417676
> 2019-02-04 20:23:47.505 ERROR (qtp1595212853-87538) [c:sial-catalog-product s:shard1 r:core_node4 x:sial-catalog-product_shard1_replica2] o.a.s.s.HttpSolrCall null:org.apache.solr.common.SolrException: Error reading document with docId 414871
>
> There are many more than these three. What does this mean?
>
> On the same node I also see problems with 2 other collections:
> ehs-catalog-qmdoc_shard1_replica2: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error opening new searcher
> sial-catalog-category-180721_shard2_replica_n4: org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Error opening new searcher
>
> Yet another replica on this node is down
>
> What could cause the error reading docId problems? Why is there a problem opening a new searcher on   2 unrelated collections which just happen to be on the same node? How do I go about diagnosing the problems?
>
> We've been seeing a lot of problems with solrcloud.
>
> We are on Solr 7.2
>
>