Examples of org.apache.hadoop.hbase.regionserver.HRegionServer.abort()

Package org.apache.hadoop.hbase.regionserver

Class org.apache.hadoop.hbase.regionserver.HRegionServer

Examples of org.apache.hadoop.hbase.regionserver.HRegionServer.abort()

org.apache.hadoop.hbase.regionserver.HRegionServer.abort()
Cause the server to exit without closing the regions it is serving, the log it is using and without notifying the master. Used unit testing and on catastrophic events such as HDFS is yanked out from under hbase or we OOME. @param reason the reason we are aborting @param cause the exception that caused the abort, or null

    // abort master
    abortMaster(cluster);


    // abort RS
    LOG.info("Aborting region server: " + hrs.getServerName());
    hrs.abort("testing");


    // wait for abort completes
    TEST_UTIL.waitFor(120000, 200, new Waiter.Predicate<Exception>() {
      @Override
      public boolean evaluate() throws Exception {

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    // abort master
    abortMaster(cluster);


    // abort RS
    LOG.info("Aborting region server: " + hrs.getServerName());
    hrs.abort("testing");


    // wait for the RS dies
    TEST_UTIL.waitFor(120000, 200, new Waiter.Predicate<Exception>() {
      @Override
      public boolean evaluate() throws Exception {

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    makeHLog(hrs1.getWAL(), regions, "table", "family", NUM_LOG_LINES, 100);


    // abort RS1
    LOG.info("Aborting region server: " + hrs1.getServerName());
    hrs1.abort("testing");


    // wait for abort completes
    TEST_UTIL.waitFor(120000, 200, new Waiter.Predicate<Exception>() {
      @Override
      public boolean evaluate() throws Exception {

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    Thread.sleep(300);
    // abort second region server
    rsts = cluster.getLiveRegionServerThreads();
    HRegionServer hrs2 = rsts.get(0).getRegionServer();
    LOG.info("Aborting one more region server: " + hrs2.getServerName());
    hrs2.abort("testing");


    // wait for abort completes
    TEST_UTIL.waitFor(120000, 200, new Waiter.Predicate<Exception>() {
      @Override
      public boolean evaluate() throws Exception {

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    LOG.info("Disabling table\n");
    TEST_UTIL.getHBaseAdmin().disableTable(Bytes.toBytes("disableTable"));
    
    // abort RS
    LOG.info("Aborting region server: " + hrs.getServerName());
    hrs.abort("testing");


    // wait for abort completes
    TEST_UTIL.waitFor(120000, 200, new Waiter.Predicate<Exception>() {
      @Override
      public boolean evaluate() throws Exception {

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    abortMaster(cluster);


    // abort RS
    int numRS = cluster.getLiveRegionServerThreads().size();
    LOG.info("Aborting region server: " + hrs.getServerName());
    hrs.abort("testing");


    // wait for the RS dies
    long start = EnvironmentEdgeManager.currentTimeMillis();
    while (cluster.getLiveRegionServerThreads().size() > (numRS - 1)) {
      if (EnvironmentEdgeManager.currentTimeMillis() - start > 60000) {

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      int aborted = 0;
      final int numberToAbort = 2;
      for (int i = 1; i < TEST_UTIL.getMiniHBaseCluster().countServedRegions(); i++) {
        HRegionServer hrs = TEST_UTIL.getMiniHBaseCluster().getRegionServer(i);
        if (hrs.getServerName().equals(drainingServer.getServerName())) continue;
        hrs.abort("Aborting");
        aborted++;
        if (aborted >= numberToAbort) break;
      }
      // Wait for regions to come back on line again.
      waitForAllRegionsOnline();

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   * @param serverNumber  Used as index into a list.
   */
  public String abortRegionServer(int serverNumber) {
    HRegionServer server = getRegionServer(serverNumber);
    LOG.info("Aborting " + server.toString());
    server.abort("Aborting for tests", new Exception("Trace info"));
    return server.toString();
  }


  /**
   * Shut down the specified region server cleanly

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    conf.setInt(
        HConstants.HBASE_REGIONSERVER_LEASE_PERIOD_KEY, SCANNER_TIMEOUT*100);
    HTable higherScanTimeoutTable = new HTable(conf, TABLE_NAME);
    ResultScanner r = higherScanTimeoutTable.getScanner(scan);
    // This takes way less than SCANNER_TIMEOUT*100
    rs.abort("die!");
    Result[] results = r.next(NB_ROWS);
    assertEquals(NB_ROWS, results.length);
    r.close();
    higherScanTimeoutTable.close();
    LOG.info("END ************ test2772");

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    int count = 1;
    r.next();
    LOG.info("START ************ TEST3686A---44");


    // Kill after one call to next(), which got 5 rows.
    rs.abort("die!");
    while(r.next() != null) {
      count ++;
    }
    assertEquals(NB_ROWS, count);
    r.close();

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