Re: Solr 7.6 query performace question

["raj.yadav" <ra...@cse.ism.ac.in>]

harjags wrote
> Below errors are very common in 7.6 and we have solr nodes failing with
> tanking memory.
> 
> The request took too long to iterate over terms. Timeout: timeoutAt:
> 162874656583645 (System.nanoTime(): 162874701942020),
> TermsEnum=org.apache.lucene.codecs.blocktree.SegmentTermsEnum@74507f4a
> 
> or 
> 
> #*BitSetDocTopFilter*]; The request took too long to iterate over terms.
> Timeout: timeoutAt: 33288640223586 (System.nanoTime(): 33288700895778),
> TermsEnum=org.apache.lucene.codecs.blocktree.SegmentTermsEnum@5e458644
> 
> 
> or 
> 
> #SortedIntDocSetTopFilter]; The request took too long to iterate over
> terms.
> Timeout: timeoutAt: 552497919389297 (System.nanoTime(): 552508251053558),
> TermsEnum=org.apache.lucene.codecs.blocktree.SegmentTermsEnum@60b7186e
> 
> --
> Sent from: https://lucene.472066.n3.nabble.com/Solr-User-f472068.html



We are also seeing such errors in our log. But our nodes are not failing
also the frequency of such warnings are less then 5% of overall traffic.
What does this error means.
Can someone eleaborate following :
1. What does `The request took too long to iterate over terms` means ? 
2. what is `BitSetDocTopFilter` and `SortedIntDocSetTopFilter` ?

Regards,
Raj



--
Sent from: https://lucene.472066.n3.nabble.com/Solr-User-f472068.html