wei wang created SOLR-17058:
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Summary: Request param to disable distributed stats request at
query time
Key: SOLR-17058
URL: https://issues.apache.org/jira/browse/SOLR-17058
Project: Solr
Issue Type: New Feature
Security Level: Public (Default Security Level. Issues are Public)
Components: query
Reporter: wei wang
When distributed IDF is enabled in solr cloud by adding one of the cache
implementations in solrconfig.xml
[https://solr.apache.org/guide/solr/latest/deployment-guide/solrcloud-distributed-requests.html#distributedidf],
each solr query will incur a distributed shard request to get term statistics
"debug": {
"track": {
"rid": "-54",
"PARSE_QUERY": {
"http://192.168.0.34:8987/solr/shard2_replica_n1/": {
"QTime": “2”,
"ElapsedTime": "13",
"RequestPurpose": "GET_TERM_STATS",
…
For queries that does not use distributed IDF information for scoring, the
stats request is not necessary. For example when retrieving docs by terms
filter:
http://localhost:8987/solr/collection1/select?indent=true&q.op=OR&q=*%3A*&wt=json&fq=\{!terms
f=id}id1,id2
Hence I propose to add a disableDistribStats request param so that the
distributed stats request can be disabled at query time.
# disableDistribStats defaults to false. When the param is not present, there
is no change to current distributed IDF behavior.
# When explicitly set disableDistribStats=true, distributed stats call is
disabled for the current query.
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