scanquery is not working, however SQL select and retrieving a single records works fine

[Naveen]

HI

Scanquery on a cache is not working, but simple GET with a key and select
statement on SQL console working fine. This is the error I get on the client
side

Ignite cluster is unavailable
[sock=14555e0a[TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384:
Socket[addr=XXX.XXX.com/XX.XXX.10.65,port=10800,localport=39968]]]


And on the server logs, I see the below error

[2020-12-31
10:38:03,395][ERROR][client-connector-#79][ClientListenerNioListener] Failed
to process client request
[req=o.a.i.i.processors.platform.client.cache.ClientCacheScanQueryRequest@18427c6f]
java.util.NoSuchElementException
        at
org.apache.ignite.internal.util.GridCloseableIteratorAdapter.nextX(GridCloseableIteratorAdapter.java:39)
        at
org.apache.ignite.internal.util.lang.GridIteratorAdapter.next(GridIteratorAdapter.java:35)
        at
org.apache.ignite.internal.processors.cache.AutoClosableCursorIterator.next(AutoClosableCursorIterator.java:59)
        at
org.apache.ignite.internal.processors.platform.client.cache.ClientCacheQueryCursor.writePage(ClientCacheQueryCursor.java:78)
        at
org.apache.ignite.internal.processors.platform.client.cache.ClientCacheQueryResponse.encode(ClientCacheQueryResponse.java:51)
        at
org.apache.ignite.internal.processors.platform.client.ClientMessageParser.encode(ClientMessageParser.java:406)
        at
org.apache.ignite.internal.processors.odbc.ClientListenerNioListener.onMessage(ClientListenerNioListener.java:210)
        at
org.apache.ignite.internal.processors.odbc.ClientListenerNioListener.onMessage(ClientListenerNioListener.java:49)
        at
org.apache.ignite.internal.util.nio.GridNioFilterChain$TailFilter.onMessageReceived(GridNioFilterChain.java:279)
        at
org.apache.ignite.internal.util.nio.GridNioFilterAdapter.proceedMessageReceived(GridNioFilterAdapter.java:109)
        at
org.apache.ignite.internal.util.nio.GridNioAsyncNotifyFilter$3.body(GridNioAsyncNotifyFilter.java:97)
        at
org.apache.ignite.internal.util.worker.GridWorker.run(GridWorker.java:120)
        at
org.apache.ignite.internal.util.worker.GridWorkerPool$1.run(GridWorkerPool.java:70)
        at
java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
        at
java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
        at java.base/java.lang.Thread.run(Thread.java:834)

This is the code

                         ClientCache<String, BinaryObject> cache =
ignite.cache(cacheName).withKeepBinary();
             try (QueryCursor<Cache.Entry&lt;String, BinaryObject>> cursor =
cache.query(new ScanQuery<String, BinaryObject>())) {
                        for (Cache.Entry<String, BinaryObject> entry :
cursor) {

It does work on our Dev cluster though, but not working on UAT, what could
be the issue. 

Thanks
Naveen



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