Examples with UnexpectedReplicaStateException org.apache.hadoop.hdfs.server.datanode.UnexpectedReplicaStateException used on opensource projects

Example 1 with UnexpectedReplicaStateException

use of org.apache.hadoop.hdfs.server.datanode.UnexpectedReplicaStateException in project hadoop by apache.

the class FsDatasetImpl method checkBlock.

/**
   * Check if a block is valid.
   *
   * @param b           The block to check.
   * @param minLength   The minimum length that the block must have.  May be 0.
   * @param state       If this is null, it is ignored.  If it is non-null, we
   *                        will check that the replica has this state.
   *
   * @throws ReplicaNotFoundException          If the replica is not found 
   *
   * @throws UnexpectedReplicaStateException   If the replica is not in the 
   *                                             expected state.
   * @throws FileNotFoundException             If the block file is not found or there
   *                                              was an error locating it.
   * @throws EOFException                      If the replica length is too short.
   * 
   * @throws IOException                       May be thrown from the methods called. 
   */
// FsDatasetSpi
@Override
public void checkBlock(ExtendedBlock b, long minLength, ReplicaState state) throws ReplicaNotFoundException, UnexpectedReplicaStateException, FileNotFoundException, EOFException, IOException {
    final ReplicaInfo replicaInfo = volumeMap.get(b.getBlockPoolId(), b.getLocalBlock());
    if (replicaInfo == null) {
        throw new ReplicaNotFoundException(b);
    }
    if (replicaInfo.getState() != state) {
        throw new UnexpectedReplicaStateException(b, state);
    }
    if (!replicaInfo.blockDataExists()) {
        throw new FileNotFoundException(replicaInfo.getBlockURI().toString());
    }
    long onDiskLength = getLength(b);
    if (onDiskLength < minLength) {
        throw new EOFException(b + "'s on-disk length " + onDiskLength + " is shorter than minLength " + minLength);
    }
}