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SOLR-9915: PeerSync alreadyInSync check is not backwards compatible and results in full replication during a rolling restart

This commit is contained in:
Noble Paul 2017-01-04 04:38:51 +10:30
parent f3306786a1
commit 5b1f6b2ba4
2 changed files with 11 additions and 1 deletions
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4
solr/CHANGES.txt
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@ -370,6 +370,10 @@ Other Changes
* SOLR-9899: StandardDirectoryFactory should use optimizations for all FilterDirectorys not just NRTCachingDirectory.
(Mark Miller)
* SOLR-9915: PeerSync alreadyInSync check is not backwards compatible and results in full replication during a rolling restart
(Tim Owen via noble)
================== 6.3.0 ==================
Consult the LUCENE_CHANGES.txt file for additional, low level, changes in this release.

8
solr/core/src/java/org/apache/solr/update/PeerSync.java
View File

@ -335,9 +335,15 @@ public class PeerSync {
for (;;) {
ShardResponse srsp = shardHandler.takeCompletedOrError();
if (srsp == null) break;
Object replicaFingerprint = srsp.getSolrResponse().getResponse().get("fingerprint");
if (replicaFingerprint == null) {
log.warn("Replica did not return a fingerprint - possibly an older Solr version");
continue;
}
try {
IndexFingerprint otherFingerprint = IndexFingerprint.fromObject(srsp.getSolrResponse().getResponse().get("fingerprint"));
IndexFingerprint otherFingerprint = IndexFingerprint.fromObject(replicaFingerprint);
IndexFingerprint ourFingerprint = IndexFingerprint.getFingerprint(core, Long.MAX_VALUE);
if(IndexFingerprint.compare(otherFingerprint, ourFingerprint) == 0) {
log.info("We are already in sync. No need to do a PeerSync ");