madrob commented on a change in pull request #1297: SOLR-14253 Replace various
sleep calls with ZK waits
URL: https://github.com/apache/lucene-solr/pull/1297#discussion_r385779370
##########
File path:
solr/core/src/java/org/apache/solr/cloud/api/collections/OverseerCollectionMessageHandler.java
##########
@@ -630,34 +596,32 @@ private void modifyCollection(ClusterState clusterState,
ZkNodeProps message, Na
overseer.offerStateUpdate(Utils.toJSON(message));
- TimeOut timeout = new TimeOut(30, TimeUnit.SECONDS, timeSource);
- boolean areChangesVisible = true;
- while (!timeout.hasTimedOut()) {
- DocCollection collection =
cloudManager.getClusterStateProvider().getClusterState().getCollection(collectionName);
- areChangesVisible = true;
- for (Map.Entry<String,Object> updateEntry :
message.getProperties().entrySet()) {
- String updateKey = updateEntry.getKey();
-
- if (!updateKey.equals(ZkStateReader.COLLECTION_PROP)
- && !updateKey.equals(Overseer.QUEUE_OPERATION)
- && updateEntry.getValue() != null // handled below in a separate
conditional
- && !updateEntry.getValue().equals(collection.get(updateKey))) {
- areChangesVisible = false;
- break;
+ try {
+ zkStateReader.waitForState(collectionName, 30, TimeUnit.SECONDS, c -> {
+ if (c == null) {
Review comment:
It could happen if there is a concurrent delete
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