Hi all,
We’ve run into an issue when using ContinuousQuery and hoping someone can help
provide some insight.
1 ContinuousQuery<K, V> query = new ContinuousQuery<>();
2 query.setLocalListener(listener);
3 query.setInitialQuery(new ScanQuery<>());
4 query.setPageSize(updatePageSize);
5 query.setTimeInterval(updateTimeInterval);
6 cursor = igniteCache.query(query);
7
8 for (Entry<K, V> entry : cursor) {
9 cache.put(entry.getKey(), entry.getValue());
10 }
With the code snippet above, we have verified that the igniteCache has data but
occasionally the query on line 6 results in an empty cursor.
Our questions:
Is this expected behavior?
Is there some additional configuration step we are missing which could lead to
inconsistent results from the initialQuery?
Is there a best practice for retrieving results from the initialQuery such as
retry? We have noticed that if we retry after it fails to get results the first
time, it will then succeed on a subsequent try with a one-second wait time
between retries. We didn’t think this should be necessary so wondered if there
was something we were doing incorrectly.
Please let me know if any additional information/logs are needed and thank you
for your help!
Latha
Latha Masters
Lead Software Engineer
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