On 3/1/2018 4:31 AM, 苗海泉 wrote:
My question is, what is the relationship between the number of threads
in the commitScheduler thread pool and what? The number of
searcherExecutor thread pool and the above have a relationship, why so
much, thank you!
I don't understand this question. Can you try again?
Looking at the information you've provided ... are you doing a large
number of simultaneous DeleteByQuery operations?That does seem like a
lot of threads in a WAITING state. I'm not sure what is going on, but
if there are a lot of DeleteByQuery operations happening, it MIGHT cause
that.
In another discussion, you mentioned having more than one thousand
collections. This is going to result in Solr creating a large number of
threads. I'm actually surprised that you don't have far more than 1169
threads.
Every experiment I've done with thousands of collections has turned out
badly, often before I even reach 1000 of them. SolrCloud just does not
like dealing with it.
Three years ago, I filed the following issue about it. Somebody marked
it as fixed, though I have no idea why. It doesn't appear to be fixed
to me, and there were never any code changes related to the issue:
https://issues.apache.org/jira/browse/SOLR-7191
In that discussion about lots of collections, you asked this:
Thank you for your advice on gc tools, what do you suggest to me?
I don't understand this question either. I had just given you some
advice about GC tools. What are you asking?
Thanks,
Shawn
