/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.pulsar.broker.transaction.coordinator;

import org.apache.pulsar.broker.PulsarService;
import org.testng.Assert;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class TransactionMetaStoreAssignmentTest extends TransactionMetaStoreTestBase {

    @BeforeClass
    public void init() throws Exception {
        super.setup();
    }

    @Test
    public void testTransactionMetaStoreAssignAndFailover() throws IOException, InterruptedException {

        int transactionMetaStoreCount = 0;
        for (PulsarService pulsarService : pulsarServices) {
            transactionMetaStoreCount += pulsarService.getTransactionMetadataStoreService().getStores().size();
        }

        Assert.assertEquals(transactionMetaStoreCount, 16);

        PulsarService crashedMetaStore = null;
        for (int i = pulsarServices.length - 1; i >= 0; i--) {
            if (pulsarServices[i].getTransactionMetadataStoreService().getStores().size() > 0) {
                crashedMetaStore = pulsarServices[i];
                break;
            }
        }

        Assert.assertNotNull(crashedMetaStore);
        List<PulsarService> services = new ArrayList<>(pulsarServices.length - 1);
        for (PulsarService pulsarService : pulsarServices) {
            if (pulsarService != crashedMetaStore) {
                services.add(pulsarService);
            }
        }
        pulsarServices = new PulsarService[pulsarServices.length - 1];
        for (int i = 0; i < services.size(); i++) {
            pulsarServices[i] = services.get(i);
        }
        crashedMetaStore.close();
        
        Thread.sleep(3000);

        transactionMetaStoreCount = 0;
        for (PulsarService pulsarService : pulsarServices) {
            transactionMetaStoreCount += pulsarService.getTransactionMetadataStoreService().getStores().size();
        }

        Assert.assertEquals(transactionMetaStoreCount, 16);

        transactionCoordinatorClient.close();
    }
}

@@ -861,16 +861,95 @@
 nator;%0A%0A
+import java.io.IOException;%0Aimport java.util.ArrayList;%0Aimport java.util.List;%0A
 import o
@@ -987,16 +987,50 @@
 ervice;%0A
+import org.awaitility.Awaitility;%0A
 import o
@@ -1131,88 +1131,8 @@
 t;%0A%0A
-import java.io.IOException;%0Aimport java.util.ArrayList;%0Aimport java.util.List;%0A%0A
 publ
@@ -2545,24 +2545,25 @@
 lose();%0A
+%0A
         
 %0A       
@@ -2558,45 +2558,90 @@
     
-%0A        Thread.sleep(3000);%0A%0A       
+Awaitility.await()%0A                .untilAsserted(() -%3E %7B%0A%0A                    int
  tra
@@ -2654,38 +2654,51 @@
 onMetaStoreCount
+2
  = 0;%0A
+            
         for (Pul
@@ -2746,32 +2746,44 @@
 ) %7B%0A            
+   
+         
 transactionMetaS
@@ -2783,32 +2783,33 @@
 onMetaStoreCount
+2
  += pulsarServic
@@ -2858,36 +2858,93 @@
 Stores()
-.size();%0A        %7D%0A%0A
+%0A                                .size();%0A                    %7D%0A%0A            
         
@@ -2980,38 +2980,59 @@
 onMetaStoreCount
+2
 , 16);
+%0A                %7D);
 %0A%0A        transa

fix flaky testTransactionMetaStoreAssignAndFailover (#9506)