Public

size

Returns the underlying region that backs this queue.

getRegion

addCacheListener

Puts an object onto the tail of the queue

close

Peeks either a batchSize number of elements from the queue or until timeToWait
milliseconds have ela

peek

remove

removeCacheListener

Takes up to batchSize number of objects from the head of the queue. As soon as
it gets a null respon

take

Estimate constant memory usage of the queue excluding the queue entries.

estimateMemoryFootprint

release

RegionQueue

Finding current android device location

 A Java virtual machine.

 A VirtualMachine represents a Java virtual machine to which this Java vir

com.sun.tools.attach.VirtualMachine

Allows reading from and writing to a file in a random-access manner. This is
different from the uni-

java.io.RandomAccessFile

java.lang.String

A Comparator is used to compare two objects to determine their ordering with
respect to each other. 

java.util.Comparator

An ExecutorService that executes each submitted task using one of possibly
several pooled threads, n

java.util.concurrent.ThreadPoolExecutor

The Manifest class is used to obtain attribute information for a JarFile and its
entries.

java.util.jar.Manifest

getApplicationContext

Return the contained value, if present, otherwise throw an exception to be
created by the provided s

orElseThrow

addToBackStack

/**
   * Tests whether the QRM message removes the events correctly from the DACE &
   * Conflation Map. The events which are of ID greater than that contained in
   * QRM should stay
   * 
   * @author Asif
   */

// Asif Not expected from SingleWriteSingleReadRegionQueue as it does not

// InterruptedException. But since both HARegionQueue and

// extend RegionQueue , it has to handle InterruptedException

// this._logger.warning(getGateway() + ": Queued event (" +

// (statistics.getEventsQueued()) + "): " + gatewayEvent + " queue size: "

/*
     * FAILOVER TESTING CODE System.out.println(getName() + ": Queued event (" +
     * (statistics.getEventsQueued()) + "): " + gatewayEvent.getId());
     */

/**
   * The basis of HARegionQueue's Add & remove operations etc , is that the
   * event being added first goes into DACE , Region etc and finally it is
   * published by adding into the available IDs Set. Similarly if an event is to
   * be removed it should first be removed from availableIDs set & then from
   * behind the scenes. It will be the responsibility of the thread removing
   * from availabelIDs successfully which will remove the entry from all other
   * places. Now if the expiry task makes the event from underlying null before
   * removing from availabel IDs , there is a potential violation. This test
   * will validate that behaviour
   * 
   * @author Asif
   *  
   */

// In case of parallel sender, we don't expect the key to be not set. 

// If it is the case then the event must be coming from notificationOnly message.

// Don't enqueue the event and return from here only. 

// Fix for #49081 and EntryDestroyedException in #49367. 

"ParallelGatewaySenderEventProcessor not enqueing the following event since tailKey is not set. {}"

//TODO : Kishor : Looks like for PDX region bucket id is set to -1.

//    if (!(region instanceof DistributedRegion && ((DistributedRegion)region)

//      bucketId = PartitionedRegionHelper.getHashKey(event);

// while merging 42004, kept substituteValue as it is(it is barry's

// change 42466). bucketID is merged with eventID.getBucketID

//Asif Not expected from SingleWriteSingleReadRegionQueue as it does not throw

//InterruptedException. But since both HARegionQueue and SingleReadSingleWriteRegionQueue

//extend RegionQueue , it has to handle InterruptedException

//this._logger.warning(getGateway() + ": Queued event (" +

/*
       * FAILOVER TESTING CODE System.out.println(getName() + ": Queued event (" +
       * (statistics.getEventsQueued()) + "): " + gatewayEvent.getId());
       */

"ParallelGatewaySenderEventProcessor not enqueing the "

"following event since tailKey is not set. "

How to use putmethodin com.gemstone.gemfire.internal.cache.RegionQueue

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