Package org.apache.hadoop.hdfs.server.common

Examples of org.apache.hadoop.hdfs.server.common.InconsistentFSStateException

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        }
        // sd is locked but not opened
        switch(curState) {
        case NON_EXISTENT:
          // name-node fails if any of the configured storage dirs are missing
          throw new InconsistentFSStateException(sd.getRoot(),
                      "storage directory does not exist or is not accessible.");
        case NOT_FORMATTED:
          break;
        case NORMAL:
          break;
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    // Upgrade is allowed only if there are
    // no previous fs states in any of the directories
    for (Iterator<StorageDirectory> it = storage.dirIterator(); it.hasNext();) {
      StorageDirectory sd = it.next();
      if (sd.getPreviousDir().exists())
        throw new InconsistentFSStateException(sd.getRoot(),
            "previous fs state should not exist during upgrade. "
            + "Finalize or rollback first.");
    }

    // load the latest image
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                                        getLayoutVersion())) {
        // In 0.22, we have the checksum stored in the VERSION file.
        String md5 = storage.getDeprecatedProperty(
            NNStorage.DEPRECATED_MESSAGE_DIGEST_PROPERTY);
        if (md5 == null) {
          throw new InconsistentFSStateException(sdForProperties.getRoot(),
              "Message digest property " +
              NNStorage.DEPRECATED_MESSAGE_DIGEST_PROPERTY +
              " not set for storage directory " + sdForProperties.getRoot());
        }
        loadFSImage(imageFile.getFile(), new MD5Hash(md5), target, recovery);
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          }
        } catch(SecurityException se) {
          isAccessible = false;
        }
        if(!isAccessible)
          throw new InconsistentFSStateException(sd.getRoot(),
              "cannot access checkpoint directory.");
       
        if (format) {
          // Don't confirm, since this is just the secondary namenode.
          LOG.info("Formatting storage directory " + sd);
          sd.clearDirectory();
        }
       
        StorageState curState;
        try {
          curState = sd.analyzeStorage(HdfsServerConstants.StartupOption.REGULAR, storage);
          // sd is locked but not opened
          switch(curState) {
          case NON_EXISTENT:
            // fail if any of the configured checkpoint dirs are inaccessible
            throw new InconsistentFSStateException(sd.getRoot(),
                  "checkpoint directory does not exist or is not accessible.");
          case NOT_FORMATTED:
            break;  // it's ok since initially there is no current and VERSION
          case NORMAL:
            // Read the VERSION file. This verifies that:
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    }
   
    // valid storage id, storage id may be empty
    String ssid = props.getProperty("storageID");
    if (ssid == null) {
      throw new InconsistentFSStateException(sd.getRoot(), "file "
          + STORAGE_FILE_VERSION + " is invalid.");
    }
    String sid = getStorageID();
    if (!(sid.equals("") || ssid.equals("") || sid.equals(ssid))) {
      throw new InconsistentFSStateException(sd.getRoot(),
          "has incompatible storage Id.");
    }
   
    if (sid.equals("")) { // update id only if it was empty
      setStorageID(ssid);
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    // We allow rollback to a state, which is either consistent with
    // the namespace state or can be further upgraded to it.
    if (!(prevInfo.getLayoutVersion() >= HdfsConstants.LAYOUT_VERSION
          && prevInfo.getCTime() <= nsInfo.getCTime()))  // cannot rollback
      throw new InconsistentFSStateException(sd.getRoot(),
          "Cannot rollback to a newer state.\nDatanode previous state: LV = "
              + prevInfo.getLayoutVersion() + " CTime = " + prevInfo.getCTime()
              + " is newer than the namespace state: LV = "
              + nsInfo.getLayoutVersion() + " CTime = " + nsInfo.getCTime());
    LOG.info("Rolling back storage directory " + sd.getRoot()
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      DataInputStream in = new DataInputStream(fin);
      try {
        // read image version: first appeared in version -1
        int imgVersion = in.readInt();
        if (getLayoutVersion() != imgVersion) {
          throw new InconsistentFSStateException(curFile,
              "imgVersion " + imgVersion +
              " expected to be " + getLayoutVersion());
        }

        // read namespaceID: first appeared in version -2
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  /** Validate and set block pool ID */
  private void setBlockPoolID(File storage, String bpid)
      throws InconsistentFSStateException {
    if (bpid == null || bpid.equals("")) {
      throw new InconsistentFSStateException(storage, "file "
          + Storage.STORAGE_FILE_VERSION + " has no block pool Id.");
    }
   
    if (!blockpoolID.equals("") && !blockpoolID.equals(bpid)) {
      throw new InconsistentFSStateException(storage,
          "Unexepcted blockpoolID " + bpid + " . Expected " + blockpoolID);
    }
    setBlockPoolID(bpid);
  }
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          }
        } catch(SecurityException se) {
          isAccessible = false;
        }
        if(!isAccessible)
          throw new InconsistentFSStateException(sd.getRoot(),
              "cannot access checkpoint directory.");
        StorageState curState;
        try {
          curState = sd.analyzeStorage(HdfsConstants.StartupOption.REGULAR);
          // sd is locked but not opened
          switch(curState) {
          case NON_EXISTENT:
            // fail if any of the configured checkpoint dirs are inaccessible
            throw new InconsistentFSStateException(sd.getRoot(),
                  "checkpoint directory does not exist or is not accessible.");
          case NOT_FORMATTED:
            break;  // it's ok since initially there is no current and VERSION
          case NORMAL:
            break;
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    }
   
    // valid storage id, storage id may be empty
    String ssid = props.getProperty("storageID");
    if (ssid == null) {
      throw new InconsistentFSStateException(sd.getRoot(), "file "
          + STORAGE_FILE_VERSION + " is invalid.");
    }
    String sid = getStorageID();
    if (!(sid.equals("") || ssid.equals("") || sid.equals(ssid))) {
      throw new InconsistentFSStateException(sd.getRoot(),
          "has incompatible storage Id.");
    }
   
    if (sid.equals("")) { // update id only if it was empty
      setStorageID(ssid);
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Related Classes of org.apache.hadoop.hdfs.server.common.InconsistentFSStateException

  • org.apache.hadoop.hdfs.server.datanode.BlockPoolSliceStorage
  • org.apache.hadoop.hdfs.server.datanode.DataStorage
  • org.apache.hadoop.hdfs.server.datanode.DataStorage$RollbackThread
  • org.apache.hadoop.hdfs.server.datanode.NameSpaceSliceStorage
  • org.apache.hadoop.hdfs.server.namenode.BackupImage
  • org.apache.hadoop.hdfs.server.namenode.BackupStorage
  • org.apache.hadoop.hdfs.server.namenode.FSImage
  • org.apache.hadoop.hdfs.server.namenode.FSImageFormat$Loader
  • org.apache.hadoop.hdfs.server.namenode.NNStorage
  • org.apache.hadoop.hdfs.server.namenode.SecondaryNameNode$CheckpointStorage
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