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https://issues.apache.org/jira/browse/SOLR-15023?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Dinesh Kumar updated SOLR-15023:
--------------------------------
Description:
Hi Team,
We are facing "connection lost error" in Solr admin page. While debugging, we
found an issue with admin/metrics API.
*Detail Analysis:*
We have around 200+ collections on a Solr cloud cluster which is having 4 Solr
nodes among which 3 are zookeeper+Solr nodes. Whenever I try to hit "cloud"
page on the Solr admin UI it results in "Connection to Solr lost" error in few
seconds.
When we tried to debug the same, we found Solr admin/metrics API that is called
internally is taking *20K ms* and leads to time out which results in Connection
to Solr lost. On the other hand, I tried to hit the same query separately on a
browser which still taking *20K ms* but I get a proper response.
When the admin/metrics API call is happening from the admin console, the first
call is taking a too long time and finally fails to load the response. As a
result, concurrent multiple calls were made for the same API and throws
"Connection to Solr lost"
We tried a few ways to disable this API call or to increase the timeout, but
nothing works.
I could see the AdminHandlerProxy timeout warning in Solr logs. Attached the
error msg from Solr logs:
was:
Hi Team,
We are facing "connection lost error" in Solr admin page. While debugging, we
found an issue with admin/metrics API.
*Detailed Analysis:*
We have around 200+ collections on a Solr cloud cluster which is having 4 Solr
nodes among which 3 are zookeeper+Solr nodes. Whenever I try to hit "cloud"
page on the Solr admin UI it results in "Connection to Solr lost" error in few
seconds.
When we tried to debug the same, we found Solr admin/metrics API that is called
internally is taking *20K ms* and leads to time out which results in Connection
to Solr lost. On the other hand, I tried to hit the same query separately on a
browser which still taking *20K ms* but I get a proper response.
When the admin/metrics API call is happening from the admin console, the first
call is taking a too long time and finally fails to load the response. As a
result, concurrent multiple calls were made for the same API and throws
"Connection to Solr lost"
I could see the AdminHandlerProxy timeout warning in Solr logs. Attached the
error msg from Solr logs:
> Timeout Issue with Solr Metrics API
> -----------------------------------
>
> Key: SOLR-15023
> URL: https://issues.apache.org/jira/browse/SOLR-15023
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Admin UI, metrics
> Affects Versions: 8.2
> Reporter: Dinesh Kumar
> Priority: Major
> Attachments: Error.pdf
>
>
> Hi Team,
> We are facing "connection lost error" in Solr admin page. While debugging, we
> found an issue with admin/metrics API.
> *Detail Analysis:*
> We have around 200+ collections on a Solr cloud cluster which is having 4
> Solr nodes among which 3 are zookeeper+Solr nodes. Whenever I try to hit
> "cloud" page on the Solr admin UI it results in "Connection to Solr lost"
> error in few seconds.
> When we tried to debug the same, we found Solr admin/metrics API that is
> called internally is taking *20K ms* and leads to time out which results in
> Connection to Solr lost. On the other hand, I tried to hit the same query
> separately on a browser which still taking *20K ms* but I get a proper
> response.
> When the admin/metrics API call is happening from the admin console, the
> first call is taking a too long time and finally fails to load the response.
> As a result, concurrent multiple calls were made for the same API and throws
> "Connection to Solr lost"
> We tried a few ways to disable this API call or to increase the timeout, but
> nothing works.
> I could see the AdminHandlerProxy timeout warning in Solr logs. Attached the
> error msg from Solr logs:
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