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https://issues.apache.org/jira/browse/SOLR-13257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16881072#comment-16881072
]
Lucene/Solr QA commented on SOLR-13257:
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| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green} 0m
0s{color} | {color:green} The patch appears to include 1 new or modified test
files. {color} |
|| || || || {color:brown} master Compile Tests {color} ||
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m
19s{color} | {color:green} master passed {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} compile {color} | {color:green} 2m
18s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green} 2m
18s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} Release audit (RAT) {color} |
{color:green} 2m 6s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} Check forbidden APIs {color} |
{color:green} 1m 54s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} Validate source patterns {color} |
{color:green} 1m 54s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} Validate ref guide {color} |
{color:green} 1m 54s{color} | {color:green} the patch passed {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 31m
25s{color} | {color:green} core in the patch passed. {color} |
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 4m
55s{color} | {color:green} solrj in the patch passed. {color} |
| {color:black}{color} | {color:black} {color} | {color:black} 44m 59s{color} |
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| JIRA Issue | SOLR-13257 |
| JIRA Patch URL |
https://issues.apache.org/jira/secure/attachment/12973965/SOLR-13257.patch |
| Optional Tests | compile javac unit ratsources checkforbiddenapis
validatesourcepatterns validaterefguide |
| uname | Linux lucene1-us-west 4.4.0-137-generic #163~14.04.1-Ubuntu SMP Mon
Sep 24 17:14:57 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | ant |
| Personality |
/home/jenkins/jenkins-slave/workspace/PreCommit-SOLR-Build/sourcedir/dev-tools/test-patch/lucene-solr-yetus-personality.sh
|
| git revision | master / 0c09481 |
| ant | version: Apache Ant(TM) version 1.9.3 compiled on July 24 2018 |
| Default Java | LTS |
| Test Results |
https://builds.apache.org/job/PreCommit-SOLR-Build/484/testReport/ |
| modules | C: solr solr/core solr/solrj solr/solr-ref-guide U: solr |
| Console output |
https://builds.apache.org/job/PreCommit-SOLR-Build/484/console |
| Powered by | Apache Yetus 0.7.0 http://yetus.apache.org |
This message was automatically generated.
> Enable replica routing affinity for better cache usage
> ------------------------------------------------------
>
> Key: SOLR-13257
> URL: https://issues.apache.org/jira/browse/SOLR-13257
> Project: Solr
> Issue Type: New Feature
> Components: SolrCloud
> Reporter: Michael Gibney
> Priority: Minor
> Attachments: AffinityShardHandlerFactory.java, SOLR-13257.patch,
> SOLR-13257.patch
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> For each shard in a distributed request, Solr currently routes each request
> randomly via
> [ShufflingReplicaListTransformer|https://github.com/apache/lucene-solr/blob/master/solr/core/src/java/org/apache/solr/handler/component/ShufflingReplicaListTransformer.java]
> to a particular replica. In setups with replication factor >1, this normally
> results in a situation where subsequent requests (which one would hope/expect
> to leverage cached results from previous related requests) end up getting
> routed to a replica that hasn't seen any related requests.
> The problem can be replicated by issuing a relatively expensive query (maybe
> containing common terms?). The first request initializes the
> {{queryResultCache}} on the consulted replicas. If replication factor >1 and
> there are a sufficient number of shards, subsequent requests will likely be
> routed to at least one replica that _hasn't_ seen the query before. The
> replicas with uninitialized caches become a bottleneck, and from the client's
> perspective, many subsequent requests appear not to benefit from caching at
> all.
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