Package org.apache.hadoop.hbase.zookeeper.lock

Examples of org.apache.hadoop.hbase.zookeeper.lock.ZKInterProcessReadWriteLock.readLock()

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    public void visitAllLocks(MetadataHandler handler) throws IOException {
      for (String tableName : getTableNames()) {
        String tableLockZNode = ZKUtil.joinZNode(zkWatcher.tableLockZNode, tableName);
        ZKInterProcessReadWriteLock lock = new ZKInterProcessReadWriteLock(
            zkWatcher, tableLockZNode, null);
        lock.readLock(null).visitLocks(handler);
        lock.writeLock(null).visitLocks(handler);
      }
    }

    private List<String> getTableNames() throws IOException {
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      try {
        for (String tableName : getTableNames()) {
          String tableLockZNode = ZKUtil.joinZNode(zkWatcher.tableLockZNode, tableName);
          ZKInterProcessReadWriteLock lock = new ZKInterProcessReadWriteLock(
              zkWatcher, tableLockZNode, null);
          lock.readLock(null).reapExpiredLocks(lockExpireTimeoutMs);
          lock.writeLock(null).reapExpiredLocks(lockExpireTimeoutMs);
        }
      } catch (IOException ex) {
        throw ex;
      } catch (Exception ex) {
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          .setCreateTime(EnvironmentEdgeManager.currentTime()).build();
        byte[] lockMetadata = toBytes(data);

        InterProcessReadWriteLock lock = new ZKInterProcessReadWriteLock(zkWatcher, tableLockZNode,
          METADATA_HANDLER);
        return isShared ? lock.readLock(lockMetadata) : lock.writeLock(lockMetadata);
      }
    }

    private static byte[] toBytes(ZooKeeperProtos.TableLock data) {
      return ProtobufUtil.prependPBMagic(data.toByteArray());
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