Aerospike Exception in ScanAll, Error code -11

We are trying to scan all the records in a set, and getting an exception as below with the scanall api.
AerospikeClient version: 5.0.0

For 1 record, we are getting 5 records because the code is retrying 5 times, this is handled by setting the maxRetries=0, so we get only 1 record.

Tried with both single server and aerospike cluster, getting exception with both.
Exception::

com.aerospike.client.query.PartitionTracker.isComplete(PartitionTracker.java:257)
at com.aerospike.client.command.ScanExecutor.scanPartitions(ScanExecutor.java:70)
at com.aerospike.client.AerospikeClient.scanAll(AerospikeClient.java:1361)
at rjil.udmp.jioudmp.utils.UDMPCommonMethods.getAllKeyNames(UDMPCommonMethods.java:1848)
at rjil.udmp.jioudmp.Verticles.DBVerticle.plmn.GetAllPlmnCommand.runCommand(GetAllPlmnCommand.java:35)
at rjil.udmp.jioudmp.Verticles.DBVerticle.DataBaseVerticle.lambda$start$0(DataBaseVerticle.java:37)
at io.vertx.core.eventbus.impl.HandlerRegistration.deliver(HandlerRegistration.java:276)
at io.vertx.core.eventbus.impl.HandlerRegistration.handle(HandlerRegistration.java:254)
at io.vertx.core.eventbus.impl.EventBusImpl$InboundDeliveryContext.next(EventBusImpl.java:578)
at io.vertx.core.eventbus.impl.EventBusImpl.lambda$deliverToHandler$5(EventBusImpl.java:537)
at io.vertx.core.impl.ContextImpl.executeTask(ContextImpl.java:320)
at io.vertx.core.impl.WorkerContext.lambda$wrapTask$0(WorkerContext.java:34)
at io.vertx.core.impl.TaskQueue.run(TaskQueue.java:76)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)

Scan code::

ScanPolicy policy = new ScanPolicy();
policy.maxRetries=0;
JsonArray array = new JsonArray();
try{
aerospikeClient.scanAll(policy, UdmpConstants.AEROSPIKE_NAMESPACE_NAME, tableName, new ScanCallback() {
@OverRide
public void scanCallback(Key key, Record record)
throws AerospikeException {
array.add(record.getString(UdmpDBConstants.NAME_BIN));
}
}, UdmpDBConstants.NAME_BIN);
} catch (AerospikeException e) {
udmpBootStrapper.writeLog(Level.INFO, "UdmpCommonMethods.getAllKeyNames", e.getMessage(), "");
}

Scan retries are attempted on network connection errors or timeouts. The MAX_RETRIES_EXCEEDED exception is shown when maxRetries is exhausted. The underlying error can be determined by adding a log statement here:

aerospike-client-java/client/src/com/aerospike/client/command/ScanPartitionCommand.java

Line 64 in c1f005e

if (! tracker.shouldRetry(ae)) {

Also, the scan callback code needs to be thread-safe for scans that concurrently retrieve data from different nodes.

Added the logs, no additional logging was rcvd.

I suspect the issue to be in this line(PartitionTracker.isComplete)::
if (partsReceived >= partsRequested || (maxRecords > 0 && recordCount >= maxRecords)) {

partsRequested: 4096
partsReceived: 0
recordCount: 1
maxRecords: 0

When we set the maxRecords to 1 in the scanPolicy, it passes because of the second check(maxRecords > 0 && recordCount >= maxRecords), but exception again comes when there is no record in the DB.

Which server version are you using?

This scan functionality requires server version 4.9+.

Thanks, We upgraded the server and it worked.