Java AssignmentManager.regionOffline方法代码示例

import org.apache.hadoop.hbase.master.AssignmentManager; //导入方法依赖的package包/类
private void forceRegionsOffline(final List<HRegionInfo> hris) {
  AssignmentManager am = this.masterServices.getAssignmentManager();
  if (hris != null) {
    for (HRegionInfo hri: hris) {
      am.regionOffline(hri);
    }
  }
}
 

import org.apache.hadoop.hbase.master.AssignmentManager; //导入方法依赖的package包/类
protected void waitRegionInTransition(final List<HRegionInfo> regions)
    throws IOException, CoordinatedStateException {
  AssignmentManager am = this.masterServices.getAssignmentManager();
  RegionStates states = am.getRegionStates();
  long waitTime = server.getConfiguration().
    getLong("hbase.master.wait.on.region", 5 * 60 * 1000);
  for (HRegionInfo region : regions) {
    long done = System.currentTimeMillis() + waitTime;
    while (System.currentTimeMillis() < done) {
      if (states.isRegionInState(region, State.FAILED_OPEN)) {
        am.regionOffline(region);
      }
      if (!states.isRegionInTransition(region)) break;
      try {
        Thread.sleep(waitingTimeForEvents);
      } catch (InterruptedException e) {
        LOG.warn("Interrupted while sleeping");
        throw (InterruptedIOException)new InterruptedIOException().initCause(e);
      }
      LOG.debug("Waiting on region to clear regions in transition; "
        + am.getRegionStates().getRegionTransitionState(region));
    }
    if (states.isRegionInTransition(region)) {
      throw new IOException("Waited hbase.master.wait.on.region (" +
        waitTime + "ms) for region to leave region " +
        region.getRegionNameAsString() + " in transitions");
    }
  }
}
 

import org.apache.hadoop.hbase.master.AssignmentManager; //导入方法依赖的package包/类
/**
 * @param env
 * @return False if we fail to assign and split logs on meta ('process').
 * @throws IOException
 * @throws InterruptedException
 */
private boolean processMeta(final MasterProcedureEnv env)
throws IOException {
  if (LOG.isDebugEnabled()) LOG.debug("Processing hbase:meta that was on " + this.serverName);
  MasterServices services = env.getMasterServices();
  MasterFileSystem mfs = services.getMasterFileSystem();
  AssignmentManager am = services.getAssignmentManager();
  HRegionInfo metaHRI = HRegionInfo.FIRST_META_REGIONINFO;
  if (this.shouldSplitWal) {
    if (this.distributedLogReplay) {
      prepareLogReplay(env, META_REGION_SET);
    } else {
      // TODO: Matteo. We BLOCK here but most important thing to be doing at this moment.
      mfs.splitMetaLog(serverName);
      am.getRegionStates().logSplit(metaHRI);
    }
  }

  // Assign meta if still carrying it. Check again: region may be assigned because of RIT timeout
  boolean processed = true;
  boolean shouldAssignMeta = false;
  AssignmentManager.ServerHostRegion rsCarryingMetaRegion = am.isCarryingMeta(serverName);
    switch (rsCarryingMetaRegion) {
      case HOSTING_REGION:
        LOG.info("Server " + serverName + " was carrying META. Trying to assign.");
        am.regionOffline(HRegionInfo.FIRST_META_REGIONINFO);
        shouldAssignMeta = true;
        break;
      case UNKNOWN:
        if (!services.getMetaTableLocator().isLocationAvailable(services.getZooKeeper())) {
          // the meta location as per master is null. This could happen in case when meta
          // assignment in previous run failed, while meta znode has been updated to null.
          // We should try to assign the meta again.
          shouldAssignMeta = true;
          break;
        }
        // fall through
      case NOT_HOSTING_REGION:
        LOG.info("META has been assigned to otherwhere, skip assigning.");
        break;
      default:
        throw new IOException("Unsupported action in MetaServerShutdownHandler");
  }
  if (shouldAssignMeta) {
    // TODO: May block here if hard time figuring state of meta.
    verifyAndAssignMetaWithRetries(env);
    if (this.shouldSplitWal && distributedLogReplay) {
      int timeout = env.getMasterConfiguration().getInt(KEY_WAIT_ON_RIT, DEFAULT_WAIT_ON_RIT);
      if (!waitOnRegionToClearRegionsInTransition(am, metaHRI, timeout)) {
        processed = false;
      } else {
        // TODO: Matteo. We BLOCK here but most important thing to be doing at this moment.
        mfs.splitMetaLog(serverName);
      }
    }
  }
  return processed;
}
 

import org.apache.hadoop.hbase.master.AssignmentManager; //导入方法依赖的package包/类
@Test (timeout=180000)
public void testCleanUpDaughtersNotInMetaAfterFailedSplit() throws Exception {
  TableName table = TableName.valueOf("testCleanUpDaughtersNotInMetaAfterFailedSplit");
  MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
  try {
    HTableDescriptor desc = new HTableDescriptor(table);
    desc.addFamily(new HColumnDescriptor(Bytes.toBytes("f")));
    createTable(TEST_UTIL, desc, null);
    tbl = new HTable(cluster.getConfiguration(), desc.getTableName());
    for (int i = 0; i < 5; i++) {
      Put p1 = new Put(("r" + i).getBytes());
      p1.add(Bytes.toBytes("f"), "q1".getBytes(), "v".getBytes());
      tbl.put(p1);
    }
    admin.flush(desc.getTableName());
    List<HRegion> regions = cluster.getRegions(desc.getTableName());
    int serverWith = cluster.getServerWith(regions.get(0).getRegionInfo().getRegionName());
    HRegionServer regionServer = cluster.getRegionServer(serverWith);
    cluster.getServerWith(regions.get(0).getRegionInfo().getRegionName());
    SplitTransactionImpl st = new SplitTransactionImpl(regions.get(0), Bytes.toBytes("r3"));
    st.prepare();
    st.stepsBeforePONR(regionServer, regionServer, false);
    AssignmentManager am = cluster.getMaster().getAssignmentManager();
    Map<String, RegionState> regionsInTransition = am.getRegionStates().getRegionsInTransition();
    for (RegionState state : regionsInTransition.values()) {
      am.regionOffline(state.getRegion());
    }
    ZKAssign.deleteNodeFailSilent(regionServer.getZooKeeper(), regions.get(0).getRegionInfo());
    Map<HRegionInfo, ServerName> regionsMap = new HashMap<HRegionInfo, ServerName>();
    regionsMap.put(regions.get(0).getRegionInfo(), regionServer.getServerName());
    am.assign(regionsMap);
    am.waitForAssignment(regions.get(0).getRegionInfo());
    HBaseFsck hbck = doFsck(conf, false);
    assertErrors(hbck, new ERROR_CODE[] { ERROR_CODE.NOT_IN_META_OR_DEPLOYED,
        ERROR_CODE.NOT_IN_META_OR_DEPLOYED });
    // holes are separate from overlap groups
    assertEquals(0, hbck.getOverlapGroups(table).size());

    // fix hole
    assertErrors(
      doFsck(
        conf, false, true, false, false, false, false, false, false, false, false, false, null),
      new ERROR_CODE[] { ERROR_CODE.NOT_IN_META_OR_DEPLOYED,
        ERROR_CODE.NOT_IN_META_OR_DEPLOYED });

    // check that hole fixed
    assertNoErrors(doFsck(conf, false));
    assertEquals(5, countRows());
  } finally {
    if (tbl != null) {
      tbl.close();
      tbl = null;
    }
    cleanupTable(table);
  }
}
 

import org.apache.hadoop.hbase.master.AssignmentManager; //导入方法依赖的package包/类
@Override
public void process() throws IOException {
  boolean gotException = true; 
  try {
    AssignmentManager am = this.services.getAssignmentManager();
    this.services.getMasterFileSystem().setLogRecoveryMode();
    boolean distributedLogReplay = 
      (this.services.getMasterFileSystem().getLogRecoveryMode() == RecoveryMode.LOG_REPLAY);
    try {
      if (this.shouldSplitWal) {
        LOG.info("Splitting hbase:meta logs for " + serverName);
        if (distributedLogReplay) {
          Set<HRegionInfo> regions = new HashSet<HRegionInfo>();
          regions.add(HRegionInfo.FIRST_META_REGIONINFO);
          this.services.getMasterFileSystem().prepareLogReplay(serverName, regions);
        } else {
          this.services.getMasterFileSystem().splitMetaLog(serverName);
        }
        am.getRegionStates().logSplit(HRegionInfo.FIRST_META_REGIONINFO);
      }
    } catch (IOException ioe) {
      this.services.getExecutorService().submit(this);
      this.deadServers.add(serverName);
      throw new IOException("failed log splitting for " + serverName + ", will retry", ioe);
    }

    // Assign meta if we were carrying it.
    // Check again: region may be assigned to other where because of RIT
    // timeout
    if (am.isCarryingMeta(serverName)) {
      LOG.info("Server " + serverName + " was carrying META. Trying to assign.");
      am.regionOffline(HRegionInfo.FIRST_META_REGIONINFO);
      verifyAndAssignMetaWithRetries();
    } else if (!server.getMetaTableLocator().isLocationAvailable(this.server.getZooKeeper())) {
      // the meta location as per master is null. This could happen in case when meta assignment
      // in previous run failed, while meta znode has been updated to null. We should try to
      // assign the meta again.
      verifyAndAssignMetaWithRetries();
    } else {
      LOG.info("META has been assigned to otherwhere, skip assigning.");
    }

    try {
      if (this.shouldSplitWal && distributedLogReplay) {
        if (!am.waitOnRegionToClearRegionsInTransition(HRegionInfo.FIRST_META_REGIONINFO,
          regionAssignmentWaitTimeout)) {
          // Wait here is to avoid log replay hits current dead server and incur a RPC timeout
          // when replay happens before region assignment completes.
          LOG.warn("Region " + HRegionInfo.FIRST_META_REGIONINFO.getEncodedName()
              + " didn't complete assignment in time");
        }
        this.services.getMasterFileSystem().splitMetaLog(serverName);
      }
    } catch (Exception ex) {
      if (ex instanceof IOException) {
        this.services.getExecutorService().submit(this);
        this.deadServers.add(serverName);
        throw new IOException("failed log splitting for " + serverName + ", will retry", ex);
      } else {
        throw new IOException(ex);
      }
    }

    gotException = false;
  } finally {
    if (gotException){
      // If we had an exception, this.deadServers.finish will be skipped in super.process()
      this.deadServers.finish(serverName);
    }     
  }

  super.process();
  // Clear this counter on successful handling.
  this.eventExceptionCount.set(0);
}
 

import org.apache.hadoop.hbase.master.AssignmentManager; //导入方法依赖的package包/类
@Test (timeout=180000)
public void testCleanUpDaughtersNotInMetaAfterFailedSplit() throws Exception {
  TableName table = TableName.valueOf("testCleanUpDaughtersNotInMetaAfterFailedSplit");
  MiniHBaseCluster cluster = TEST_UTIL.getHBaseCluster();
  try {
    HTableDescriptor desc = new HTableDescriptor(table);
    desc.addFamily(new HColumnDescriptor(Bytes.toBytes("f")));
    admin.createTable(desc);
    tbl = new HTable(cluster.getConfiguration(), desc.getTableName());
    for (int i = 0; i < 5; i++) {
      Put p1 = new Put(("r" + i).getBytes());
      p1.add(Bytes.toBytes("f"), "q1".getBytes(), "v".getBytes());
      tbl.put(p1);
    }
    admin.flush(desc.getTableName());
    List<HRegion> regions = cluster.getRegions(desc.getTableName());
    int serverWith = cluster.getServerWith(regions.get(0).getRegionName());
    HRegionServer regionServer = cluster.getRegionServer(serverWith);
    cluster.getServerWith(regions.get(0).getRegionName());
    SplitTransaction st = new SplitTransaction(regions.get(0), Bytes.toBytes("r3"));
    st.prepare();
    st.stepsBeforePONR(regionServer, regionServer, false);
    AssignmentManager am = cluster.getMaster().getAssignmentManager();
    Map<String, RegionState> regionsInTransition = am.getRegionStates().getRegionsInTransition();
    for (RegionState state : regionsInTransition.values()) {
      am.regionOffline(state.getRegion());
    }
    ZKAssign.deleteNodeFailSilent(regionServer.getZooKeeper(), regions.get(0).getRegionInfo());
    Map<HRegionInfo, ServerName> regionsMap = new HashMap<HRegionInfo, ServerName>();
    regionsMap.put(regions.get(0).getRegionInfo(), regionServer.getServerName());
    am.assign(regionsMap);
    am.waitForAssignment(regions.get(0).getRegionInfo());
    HBaseFsck hbck = doFsck(conf, false);
    assertErrors(hbck, new ERROR_CODE[] { ERROR_CODE.NOT_IN_META_OR_DEPLOYED,
        ERROR_CODE.NOT_IN_META_OR_DEPLOYED });
    // holes are separate from overlap groups
    assertEquals(0, hbck.getOverlapGroups(table).size());

    // fix hole
    assertErrors(
      doFsck(
        conf, false, true, false, false, false, false, false, false, false, false, false, null),
      new ERROR_CODE[] { ERROR_CODE.NOT_IN_META_OR_DEPLOYED,
        ERROR_CODE.NOT_IN_META_OR_DEPLOYED });

    // check that hole fixed
    assertNoErrors(doFsck(conf, false));
    assertEquals(5, countRows());
  } finally {
    if (tbl != null) {
      tbl.close();
      tbl = null;
    }
    cleanupTable(table);
  }
}
 

import org.apache.hadoop.hbase.master.AssignmentManager; //导入方法依赖的package包/类
@Override
public void process() throws IOException {
  boolean gotException = true; 
  try {
    AssignmentManager am = this.services.getAssignmentManager();
    try {
      if (this.shouldSplitHlog) {
        LOG.info("Splitting hbase:meta logs for " + serverName);
        if (this.distributedLogReplay) {
          Set<HRegionInfo> regions = new HashSet<HRegionInfo>();
          regions.add(HRegionInfo.FIRST_META_REGIONINFO);
          this.services.getMasterFileSystem().prepareLogReplay(serverName, regions);
        } else {
          this.services.getMasterFileSystem().splitMetaLog(serverName);
        }
        am.getRegionStates().logSplit(HRegionInfo.FIRST_META_REGIONINFO);
      }
    } catch (IOException ioe) {
      this.services.getExecutorService().submit(this);
      this.deadServers.add(serverName);
      throw new IOException("failed log splitting for " + serverName + ", will retry", ioe);
    }

    // Assign meta if we were carrying it.
    // Check again: region may be assigned to other where because of RIT
    // timeout
    if (am.isCarryingMeta(serverName)) {
      LOG.info("Server " + serverName + " was carrying META. Trying to assign.");
      am.regionOffline(HRegionInfo.FIRST_META_REGIONINFO);
      verifyAndAssignMetaWithRetries();
    } else if (!this.services.getCatalogTracker().isMetaLocationAvailable()) {
      // the meta location as per master is null. This could happen in case when meta assignment
      // in previous run failed, while meta znode has been updated to null. We should try to
      // assign the meta again.
      verifyAndAssignMetaWithRetries();
    } else {
      LOG.info("META has been assigned to otherwhere, skip assigning.");
    }

    try {
      if (this.shouldSplitHlog && this.distributedLogReplay) {
        if (!am.waitOnRegionToClearRegionsInTransition(HRegionInfo.FIRST_META_REGIONINFO,
          regionAssignmentWaitTimeout)) {
          // Wait here is to avoid log replay hits current dead server and incur a RPC timeout
          // when replay happens before region assignment completes.
          LOG.warn("Region " + HRegionInfo.FIRST_META_REGIONINFO.getEncodedName()
              + " didn't complete assignment in time");
        }
        this.services.getMasterFileSystem().splitMetaLog(serverName);
      }
    } catch (Exception ex) {
      if (ex instanceof IOException) {
        this.services.getExecutorService().submit(this);
        this.deadServers.add(serverName);
        throw new IOException("failed log splitting for " + serverName + ", will retry", ex);
      } else {
        throw new IOException(ex);
      }
    }

    gotException = false;
  } finally {
    if (gotException){
      // If we had an exception, this.deadServers.finish will be skipped in super.process()
      this.deadServers.finish(serverName);
    }     
  }

  super.process();
  // Clear this counter on successful handling.
  this.eventExceptionCount.set(0);
}
 

import org.apache.hadoop.hbase.master.AssignmentManager; //导入方法依赖的package包/类
@Override
protected void handleTableOperation(List<HRegionInfo> regions)
throws IOException, KeeperException {
  MasterCoprocessorHost cpHost = ((HMaster) this.server)
      .getCoprocessorHost();
  if (cpHost != null) {
    cpHost.preDeleteTableHandler(this.tableName);
  }

  // 1. Wait because of region in transition
  AssignmentManager am = this.masterServices.getAssignmentManager();
  RegionStates states = am.getRegionStates();
  long waitTime = server.getConfiguration().
    getLong("hbase.master.wait.on.region", 5 * 60 * 1000);
  for (HRegionInfo region : regions) {
    long done = System.currentTimeMillis() + waitTime;
    while (System.currentTimeMillis() < done) {
      if (states.isRegionInState(region, State.FAILED_OPEN)) {
        am.regionOffline(region);
      }
      if (!states.isRegionInTransition(region)) break;
      Threads.sleep(waitingTimeForEvents);
      LOG.debug("Waiting on region to clear regions in transition; "
        + am.getRegionStates().getRegionTransitionState(region));
    }
    if (states.isRegionInTransition(region)) {
      throw new IOException("Waited hbase.master.wait.on.region (" +
        waitTime + "ms) for region to leave region " +
        region.getRegionNameAsString() + " in transitions");
    }
  }

  // 2. Remove regions from META
  LOG.debug("Deleting regions from META");
  MetaEditor.deleteRegions(this.server.getCatalogTracker(), regions);

  // 3. Move the table in /hbase/.tmp
  MasterFileSystem mfs = this.masterServices.getMasterFileSystem();
  Path tempTableDir = mfs.moveTableToTemp(tableName);

  try {
    // 4. Delete regions from FS (temp directory)
    FileSystem fs = mfs.getFileSystem();
    for (HRegionInfo hri: regions) {
      LOG.debug("Archiving region " + hri.getRegionNameAsString() + " from FS");
      HFileArchiver.archiveRegion(fs, mfs.getRootDir(),
          tempTableDir, new Path(tempTableDir, hri.getEncodedName()));
    }

    // 5. Delete table from FS (temp directory)
    if (!fs.delete(tempTableDir, true)) {
      LOG.error("Couldn't delete " + tempTableDir);
    }

    LOG.debug("Table '" + tableName + "' archived!");
  } finally {
    // 6. Update table descriptor cache
    LOG.debug("Removing '" + tableName + "' descriptor.");
    this.masterServices.getTableDescriptors().remove(tableName);

    // 7. Clean up regions of the table in RegionStates.
    LOG.debug("Removing '" + tableName + "' from region states.");
    states.tableDeleted(tableName);

    // 8. If entry for this table in zk, and up in AssignmentManager, remove it.
    LOG.debug("Marking '" + tableName + "' as deleted.");
    am.getZKTable().setDeletedTable(tableName);
  }

  if (cpHost != null) {
    cpHost.postDeleteTableHandler(this.tableName);
  }
}
 

import org.apache.hadoop.hbase.master.AssignmentManager; //导入方法依赖的package包/类
@Override
public void process() throws IOException {
  boolean gotException = true; 
  try {
    AssignmentManager am = this.services.getAssignmentManager();
    try {
      if (this.shouldSplitHlog) {
        LOG.info("Splitting hbase:meta logs for " + serverName);
        if (this.distributedLogReplay) {
          Set<HRegionInfo> regions = new HashSet<HRegionInfo>();
          regions.add(HRegionInfo.FIRST_META_REGIONINFO);
          this.services.getMasterFileSystem().prepareLogReplay(serverName, regions);
        } else {
          this.services.getMasterFileSystem().splitMetaLog(serverName);
        }
        am.getRegionStates().logSplit(HRegionInfo.FIRST_META_REGIONINFO);
      }
    } catch (IOException ioe) {
      this.services.getExecutorService().submit(this);
      this.deadServers.add(serverName);
      throw new IOException("failed log splitting for " + serverName + ", will retry", ioe);
    }

    // Assign meta if we were carrying it.
    // Check again: region may be assigned to other where because of RIT
    // timeout
    if (am.isCarryingMeta(serverName)) {
      LOG.info("Server " + serverName + " was carrying META. Trying to assign.");
      am.regionOffline(HRegionInfo.FIRST_META_REGIONINFO);
      verifyAndAssignMetaWithRetries();
    } else if (!this.services.getCatalogTracker().isMetaLocationAvailable()) {
      // the meta location as per master is null. This could happen in case when meta assignment
      // in previous run failed, while meta znode has been updated to null. We should try to
      // assign the meta again.
      verifyAndAssignMetaWithRetries();
    } else {
      LOG.info("META has been assigned to otherwhere, skip assigning.");
    }

    try {
      if (this.shouldSplitHlog && this.distributedLogReplay) {
        if (!am.waitOnRegionToClearRegionsInTransition(HRegionInfo.FIRST_META_REGIONINFO,
          regionAssignmentWaitTimeout)) {
          // Wait here is to avoid log replay hits current dead server and incur a RPC timeout
          // when replay happens before region assignment completes.
          LOG.warn("Region " + HRegionInfo.FIRST_META_REGIONINFO.getEncodedName()
              + " didn't complete assignment in time");
        }
        this.services.getMasterFileSystem().splitMetaLog(serverName);
      }
    } catch (Exception ex) {
      if (ex instanceof IOException) {
        this.services.getExecutorService().submit(this);
        this.deadServers.add(serverName);
        throw new IOException("failed log splitting for " + serverName + ", will retry", ex);
      } else {
        throw new IOException(ex);
      }
    }

    gotException = false;
  } finally {
    if (gotException){
      // If we had an exception, this.deadServers.finish will be skipped in super.process()
      this.deadServers.finish(serverName);
    }     
  }
  
  super.process();
}
 

import org.apache.hadoop.hbase.master.AssignmentManager; //导入方法依赖的package包/类
@Override
protected void handleTableOperation(List<HRegionInfo> regions)
throws IOException, KeeperException {
  MasterCoprocessorHost cpHost = ((HMaster) this.server)
      .getCoprocessorHost();
  if (cpHost != null) {
    cpHost.preDeleteTableHandler(this.tableName);
  }

  // 1. Wait because of region in transition
  AssignmentManager am = this.masterServices.getAssignmentManager();
  RegionStates states = am.getRegionStates();
  long waitTime = server.getConfiguration().
    getLong("hbase.master.wait.on.region", 5 * 60 * 1000);
  for (HRegionInfo region : regions) {
    long done = System.currentTimeMillis() + waitTime;
    while (System.currentTimeMillis() < done) {
      if (states.isRegionInState(region, State.FAILED_OPEN)) {
        am.regionOffline(region);
      }
      if (!states.isRegionInTransition(region)) break;
      Threads.sleep(waitingTimeForEvents);
      LOG.debug("Waiting on region to clear regions in transition; "
        + am.getRegionStates().getRegionTransitionState(region));
    }
    if (states.isRegionInTransition(region)) {
      throw new IOException("Waited hbase.master.wait.on.region (" +
        waitTime + "ms) for region to leave region " +
        region.getRegionNameAsString() + " in transitions");
    }
  }

  // 2. Remove regions from META
  LOG.debug("Deleting regions from META");
  MetaEditor.deleteRegions(this.server.getCatalogTracker(), regions);

  // 3. Move the table in /hbase/.tmp
  MasterFileSystem mfs = this.masterServices.getMasterFileSystem();
  Path tempTableDir = mfs.moveTableToTemp(tableName);

  try {
    // 4. Delete regions from FS (temp directory)
    FileSystem fs = mfs.getFileSystem();
    for (HRegionInfo hri: regions) {
      LOG.debug("Archiving region " + hri.getRegionNameAsString() + " from FS");
      HFileArchiver.archiveRegion(fs, mfs.getRootDir(),
          tempTableDir, new Path(tempTableDir, hri.getEncodedName()));
    }

    // 5. Delete table from FS (temp directory)
    if (!fs.delete(tempTableDir, true)) {
      LOG.error("Couldn't delete " + tempTableDir);
    }

    LOG.debug("Table '" + tableName + "' archived!");
  } finally {
    // 6. Update table descriptor cache
    LOG.debug("Removing '" + tableName + "' descriptor.");
    this.masterServices.getTableDescriptors().remove(tableName);

    // 7. If entry for this table in zk, and up in AssignmentManager, remove it.
    LOG.debug("Marking '" + tableName + "' as deleted.");
    am.getZKTable().setDeletedTable(tableName);
  }

  if (cpHost != null) {
    cpHost.postDeleteTableHandler(this.tableName);
  }
}