aparnasuresh85 commented on code in PR #2611:
URL: https://github.com/apache/solr/pull/2611#discussion_r1700718785
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solr/solrj-zookeeper/src/java/org/apache/solr/common/cloud/CollectionPropertiesZkStateReader.java:
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@@ -104,46 +103,52 @@ public CollectionPropertiesZkStateReader(ZkStateReader
zkStateReader) {
* @return a map representing the key/value properties for the collection.
*/
public Map<String, String> getCollectionProperties(final String collection,
long cacheForMillis) {
- synchronized (watchedCollectionProps) { // synchronized on the specific
collection
- Watcher watcher = null;
- if (cacheForMillis > 0) {
- watcher =
- collectionPropsWatchers.compute(
- collection,
- (c, w) ->
- w == null ? new PropsWatcher(c, cacheForMillis) :
w.renew(cacheForMillis));
- }
- VersionedCollectionProps vprops = watchedCollectionProps.get(collection);
- boolean haveUnexpiredProps = vprops != null && vprops.cacheUntilNs >
System.nanoTime();
- long untilNs =
- System.nanoTime() + TimeUnit.NANOSECONDS.convert(cacheForMillis,
TimeUnit.MILLISECONDS);
- Map<String, String> properties;
+ Watcher watcher = null; // synchronized on the specific collection
Review Comment:
Reduce the scope of synchronization until it is actually required, i.e when
cached properties expire and need to be fetched from Zookeeper
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