Package org.apache.hadoop.hive.ql.lockmgr

Examples of org.apache.hadoop.hive.ql.lockmgr.HiveLockObject

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    HiveLockObjectData lockData =
        new HiveLockObjectData(lockDb.getQueryId(),
            String.valueOf(System.currentTimeMillis()),
            "EXPLICIT", lockDb.getQueryStr());

    HiveLock lck = lockMgr.lock(new HiveLockObject(dbObj.getName(), lockData), mode, true);
    if (lck == null) {
      return 1;
    }
    return 0;
  }
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    Database dbObj = db.getDatabase(dbName);
    if (dbObj == null) {
      throw new HiveException("Database " + dbName + " does not exist ");
    }
    HiveLockObject obj = new HiveLockObject(dbObj.getName(), null);

    List<HiveLock> locks = lockMgr.getLocks(obj, false, false);
    if ((locks == null) || (locks.isEmpty())) {
      throw new HiveException("Database " + dbName + " is not locked ");
    }
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    Table  tbl = db.getTable(tabName);
    if (tbl == null) {
      throw new HiveException("Table " + tabName + " does not exist ");
    }

    HiveLockObject obj = null;

    if  (partSpec == null) {
      obj = new HiveLockObject(tbl, null);
    }
    else {
      Partition par = db.getPartition(tbl, partSpec, false);
      if (par == null) {
        throw new HiveException("Partition " + partSpec + " for table " + tabName + " does not exist");
      }
      obj = new HiveLockObject(par, null);
    }
    return obj;
  }
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    if (lockMgr == null) {
      throw new HiveException("unlock Table LockManager not specified");
    }

    String tabName = unlockTbl.getTableName();
    HiveLockObject obj = getHiveObject(tabName, unlockTbl.getPartSpec());

    List<HiveLock> locks = lockMgr.getLocks(obj, false, false);
    if ((locks == null) || (locks.isEmpty())) {
      throw new HiveException("Table " + tabName + " is not locked ");
    }
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                             String.valueOf(System.currentTimeMillis()),
                             "EXPLICIT",
                             lockTbl.getQueryStr());

    if (partSpec == null) {
      HiveLock lck = lockMgr.lock(new HiveLockObject(tbl, lockData), mode, true);
      if (lck == null) {
        return 1;
      }
      return 0;
    }

    Partition par = db.getPartition(tbl, partSpec, false);
    if (par == null) {
      throw new HiveException("Partition " + partSpec + " for table " + tabName + " does not exist");
    }
    HiveLock lck = lockMgr.lock(new HiveLockObject(par, lockData), mode, true);
    if (lck == null) {
      return 1;
    }
    return 0;
  }
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    Table  tbl = db.getTable(tabName);
    if (tbl == null) {
      throw new HiveException("Table " + tabName + " does not exist ");
    }

    HiveLockObject obj = null;

    if  (partSpec == null) {
      obj = new HiveLockObject(tbl, null);
    }
    else {
      Partition par = db.getPartition(tbl, partSpec, false);
      if (par == null) {
        throw new HiveException("Partition " + partSpec + " for table " + tabName + " does not exist");
      }
      obj = new HiveLockObject(par, null);
    }
    return obj;
  }
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    if (lockMgr == null) {
      throw new HiveException("unlock Table LockManager not specified");
    }

    String tabName = unlockTbl.getTableName();
    HiveLockObject obj = getHiveObject(tabName, unlockTbl.getPartSpec());

    List<HiveLock> locks = lockMgr.getLocks(obj, false, false);
    if ((locks == null) || (locks.isEmpty())) {
      throw new HiveException("Table " + tabName + " is not locked ");
    }
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    ZooKeeperHiveLock zLock = (ZooKeeperHiveLock)hiveLock;
    try {
      zkpClient.delete(zLock.getPath(), -1);

      // Delete the parent node if all the children have been deleted
      HiveLockObject obj = zLock.getHiveLockObject();
      String name  = getLastObjectName(parent, obj);

      List<String> children = zkpClient.getChildren(name, false);
      if ((children == null) || (children.isEmpty()))
      {
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        continue;
      }

      HiveLockObjectData data = null;
      // set the lock object with a dummy data, and then do a set if needed.
      HiveLockObject obj = getLockObject(conf, curChild, mode, data, parent, verifyTablePartition);
      if (obj == null) {
        continue;
      }

      if ((key == null) ||
          (obj.getName().equals(key.getName()))) {

        if (fetchData) {
          try {
            data = new HiveLockObjectData(new String(zkpClient.getData(curChild, new DummyWatcher(), null)));
            data.setClientIp(clientIp);
          } catch (Exception e) {
            LOG.error("Error in getting data for " + curChild, e);
            // ignore error
          }
        }
        obj.setData(data);
        HiveLock lck = (HiveLock)(new ZooKeeperHiveLock(curChild, obj, mode));
        locks.add(lck);
      }
    }
  }
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      if (names.length < 2) {
        return null;
      }

      if (!verifyTablePartition) {
        return new HiveLockObject(names, data);
      }

      // do not throw exception if table does not exist
      Table tab = db.getTable(names[0], names[1], false);
      if (tab == null) {
        return null;
      }

      if (names.length == 2) {
        return new HiveLockObject(tab, data);
      }

      Map<String, String> partSpec = new HashMap<String, String>();
      for (indx = 2; indx < names.length; indx++) {
        String[] partVals = names[indx].split("=");
        partSpec.put(partVals[0], partVals[1]);
      }

      Partition partn;
      try {
        partn = db.getPartition(tab, partSpec, false);
      } catch (HiveException e) {
        partn = null;
      }

      if (partn == null) {
        return new HiveLockObject(new DummyPartition(tab, path, partSpec), data);
      }

      return new HiveLockObject(partn, data);
    } catch (Exception e) {
      LOG.error("Failed to create ZooKeeper object: " + e);
      throw new LockException(e);
    }
  }
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Related Classes of org.apache.hadoop.hive.ql.lockmgr.HiveLockObject

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  • org.apache.hadoop.hive.ql.Driver
  • org.apache.hadoop.hive.ql.exec.DDLTask
  • org.apache.hadoop.hive.ql.lockmgr.zookeeper.ZooKeeperHiveLockManager
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