Examples of org.apache.hadoop.hbase.HBaseTestingUtility.waitUntilNoRegionsInTransition()

Class org.apache.hadoop.hbase.HBaseTestingUtility

Examples of org.apache.hadoop.hbase.HBaseTestingUtility.waitUntilNoRegionsInTransition()

org.apache.hadoop.hbase.HBaseTestingUtility.waitUntilNoRegionsInTransition()
Wait until no regions in transition. @param timeout How long to wait. @throws Exception

    HTable ht = TEST_UTIL.createTable(table, family);
    int numRegions = TEST_UTIL.createMultiRegions(conf, ht, family,
        NUM_REGIONS_TO_CREATE);
    numRegions += 1; // catalogs
    log("Waiting for no more RIT\n");
    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    log("Disabling table\n");
    TEST_UTIL.getHBaseAdmin().disableTable(table);
    log("Waiting for no more RIT\n");
    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    NavigableSet<String> regions = HBaseTestingUtility.getAllOnlineRegions(cluster);

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    log("Waiting for no more RIT\n");
    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    log("Disabling table\n");
    TEST_UTIL.getHBaseAdmin().disableTable(table);
    log("Waiting for no more RIT\n");
    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    NavigableSet<String> regions = HBaseTestingUtility.getAllOnlineRegions(cluster);
    log("Verifying only catalog and namespace regions are assigned\n");
    if (regions.size() != 2) {
      for (String oregion : regions) log("Region still online: " + oregion);
    }

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    }
    assertEquals(2, regions.size());
    log("Enabling table\n");
    TEST_UTIL.getHBaseAdmin().enableTable(table);
    log("Waiting for no more RIT\n");
    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    log("Verifying there are " + numRegions + " assigned on cluster\n");
    regions = HBaseTestingUtility.getAllOnlineRegions(cluster);
    assertRegionsAssigned(cluster, regions);
    assertEquals(expectedNumRS, cluster.getRegionServerThreads().size());

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    RegionServerThread restarted = cluster.startRegionServer();
    expectedNumRS++;
    restarted.waitForServerOnline();
    log("Additional RS is online");
    log("Waiting for no more RIT");
    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    log("Verifying there are " + numRegions + " assigned on cluster");
    assertRegionsAssigned(cluster, regions);
    assertEquals(expectedNumRS, cluster.getRegionServerThreads().size());


    // Master Restarts

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      rst.getRegionServer().stop("Stopping RS during rolling restart");
      cluster.hbaseCluster.waitOnRegionServer(rst);
      log("Waiting for RS shutdown to be handled by master");
      waitForRSShutdownToStartAndFinish(activeMaster, serverName);
      log("RS shutdown done, waiting for no more RIT");
      TEST_UTIL.waitUntilNoRegionsInTransition(60000);
      log("Verifying there are " + numRegions + " assigned on cluster");
      assertRegionsAssigned(cluster, regions);
      expectedNumRS--;
      assertEquals(expectedNumRS, cluster.getRegionServerThreads().size());
      log("Restarting region server " + num + " of " + total);

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      restarted = cluster.startRegionServer();
      restarted.waitForServerOnline();
      expectedNumRS++;
      log("Region server " + num + " is back online");
      log("Waiting for no more RIT");
      TEST_UTIL.waitUntilNoRegionsInTransition(60000);
      log("Verifying there are " + numRegions + " assigned on cluster");
      assertRegionsAssigned(cluster, regions);
      assertEquals(expectedNumRS, cluster.getRegionServerThreads().size());
      num++;
    }

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    log("Waiting for master to be ready");
    cluster.waitForActiveAndReadyMaster();
    log("Master is ready");


    // Wait till no region in transition any more
    TEST_UTIL.waitUntilNoRegionsInTransition(60000);


    // Get new region states since master restarted
    regionStates = master.getAssignmentManager().getRegionStates();


    // Both pending_open (RPC sent/not yet) regions should be online

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    HRegionServer rs = cluster.getRegionServer(0);
    ServerName metaServerName = cluster.getLiveRegionServerThreads()
      .get(0).getRegionServer().getServerName();
    activeMaster.move(HRegionInfo.FIRST_META_REGIONINFO.getEncodedNameAsBytes(),
      Bytes.toBytes(metaServerName.getServerName()));
    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    assertEquals("Meta should be assigned on expected regionserver",
      metaServerName, activeMaster.getMetaTableLocator()
        .getMetaRegionLocation(activeMaster.getZooKeeper()));


    // Now kill master, meta should remain on rs, where we placed it before.

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    activeMaster = cluster.startMaster().getMaster();
    log("Waiting for master to be ready");
    cluster.waitForActiveAndReadyMaster();
    log("Master is ready");


    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    log("Meta was assigned");


    metaState =
      MetaTableLocator.getMetaRegionState(activeMaster.getZooKeeper());
    assertEquals("hbase:meta should be onlined on RS",

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    activeMaster = cluster.startMaster().getMaster();
    log("Waiting for master to be ready");
    cluster.waitForActiveAndReadyMaster();
    log("Master is ready");


    TEST_UTIL.waitUntilNoRegionsInTransition(60000);
    log("Meta was assigned");


    // Done, shutdown the cluster
    TEST_UTIL.shutdownMiniCluster();
  }

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