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https://issues.apache.org/jira/browse/SOLR-14967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Varun Thacker updated SOLR-14967:
---------------------------------
Description:
If you are using CloudSolrClient and *only* if you are making a request with
ModifiableSolrParams , SolrJ passes __stateVer__ to the server on every
request -
[code|https://github.com/apache/lucene-solr/blob/3730719ff2ba9051278638e34bac91a4f44e9c3e/solr/solrj/src/java/org/apache/solr/client/solrj/impl/BaseCloudSolrClient.java#L920-L927]
This means callers who aren't passing ModifiableSolrParams ( let's say someone
is using {color:#000000}MultiMapSolrParams which is totally allowed and correct
) only updates their state.json every 60 seconds and the whole logic of
__stateVer__ comparisons is getting bypassed
{color}
{color:#000000}The combination of Solr's handling of __stateVer_
(_https://issues.apache.org/jira/browse/SOLR-14966) and this Jira has a
terrible effect and causes every request to hit ZK ( this caused ZK cpu to fall
of a cliff in our case ){color}
was:
If you are using CloudSolrClient and *only* if you are making a request with
ModifiableSolrParams , SolrJ passes __stateVer__ to the server on every
request -
[code|https://github.com/apache/lucene-solr/blob/3730719ff2ba9051278638e34bac91a4f44e9c3e/solr/solrj/src/java/org/apache/solr/client/solrj/impl/BaseCloudSolrClient.java#L920-L927]
This means callers who aren't passing ModifiableSolrParams ( let's say someone
is using {color:#000000}MultiMapSolrParams which is totally allowed and correct
) never end up updating it's state of the collection{color}
{color:#000000}The combination of Solr's handling of __stateVer_
(_https://issues.apache.org/jira/browse/SOLR-14966) and this Jira has a
terrible effect and causes every request to hit ZK ( this caused ZK cpu to fall
of a cliff in our case ){color}
> CloudSolrClient does not pass _stateVer_ if ModifiableSolrParams isn't used
> ---------------------------------------------------------------------------
>
> Key: SOLR-14967
> URL: https://issues.apache.org/jira/browse/SOLR-14967
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: Varun Thacker
> Priority: Major
> Attachments: zk-cpu-idle.png
>
>
> If you are using CloudSolrClient and *only* if you are making a request with
> ModifiableSolrParams , SolrJ passes __stateVer__ to the server on every
> request -
> [code|https://github.com/apache/lucene-solr/blob/3730719ff2ba9051278638e34bac91a4f44e9c3e/solr/solrj/src/java/org/apache/solr/client/solrj/impl/BaseCloudSolrClient.java#L920-L927]
>
> This means callers who aren't passing ModifiableSolrParams ( let's say
> someone is using {color:#000000}MultiMapSolrParams which is totally allowed
> and correct ) only updates their state.json every 60 seconds and the whole
> logic of __stateVer__ comparisons is getting bypassed
> {color}
>
> {color:#000000}The combination of Solr's handling of __stateVer_
> (_https://issues.apache.org/jira/browse/SOLR-14966) and this Jira has a
> terrible effect and causes every request to hit ZK ( this caused ZK cpu to
> fall of a cliff in our case ){color}
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