Sachin Divekar created SOLR-14427:
-------------------------------------
Summary: Potential bug in optimistic concurrency with
versions=true and failOnVersionConflicts=false
Key: SOLR-14427
URL: https://issues.apache.org/jira/browse/SOLR-14427
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: SolrCloud, UpdateRequestProcessors
Affects Versions: 8.5.1, 8.4.1
Reporter: Sachin Divekar
Hi all,
I am facing an issue similar to SOLR-8733 and SOLR-7404
The behaviour of {{versions=true}} and \{{failOnVersionConflicts=false }}is not
matching with the
[documentation|https://lucene.apache.org/solr/guide/8_5/updating-parts-of-documents.html#optimistic-concurrency]
I have tried it with Solr v8.4.1 and v8.5.1. In both cases, the cluster
consisted of three nodes and a collection with 3 shards and 2 replicas.
Following simple test case fails.
Collection "test" contains only two documents with ids "1" and "2"
+Update operation:+
{code:java}
curl -X POST -H 'Content-Type: application/json'
'http://localhost:8983/solr/test/update?versions=true&failOnVersionConflicts=false'
--data-binary '
[ { "id" : "2", "attr": "val", },
{ "id" : "1", "attr": "val", "_version_": -1 } ]'{code}
+Consistent response:+
{code:java}
{
"adds":[
"2",0,
"1",0],
"error":{
"metadata":[
"error-class","org.apache.solr.common.SolrException",
"root-error-class","org.apache.solr.common.SolrException",
"error-class","org.apache.solr.update.processor.DistributedUpdateProcessor$DistributedUpdatesAsyncException",
"root-error-class","org.apache.solr.update.processor.DistributedUpdateProcessor$DistributedUpdatesAsyncException"],
"msg":"Async exception during distributed update: Error from server at
http://10.0.5.237:8983/solr/test_shard1_replica_n1/: null\n\n\n\nrequest:
http://10.0.5.237:8983/solr/test_shard1_replica_n1/\nRemote error message:
version conflict for 1 expected=-1 actual=1664690075695316992",
"code":409}}{code}
As per the
[documentation|https://lucene.apache.org/solr/guide/8_5/updating-parts-of-documents.html#optimistic-concurrency],
it should have not included 1 in "adds" and should have returned a proper
version for 2.
I tried different updates using combinations of _version_ and document values
to generate conflicts. Every time the result is the same. There is no problem
with system resources. These servers are running only these Solr nodes and Solr
has been given a few GB of heap.
Are those issues SOLR-7404 and SOLR-8733 still unfixed? Unlike these issues, I
am not using the schema and config from example templates. These nodes are set
up by following Solr's production deployment document.
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