Java Code Examples for org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry#getStats()

The following examples show how to use org.apache.hadoop.hdfs.protocol.CacheDirectiveEntry#getStats() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: DistributedFileSystem.java    From hadoop with Apache License 2.0 5 votes vote down vote up 
/**
 * List cache directives.  Incrementally fetches results from the server.
 * 
 * @param filter Filter parameters to use when listing the directives, null to
 *               list all directives visible to us.
 * @return A RemoteIterator which returns CacheDirectiveInfo objects.
 */
public RemoteIterator<CacheDirectiveEntry> listCacheDirectives(
    CacheDirectiveInfo filter) throws IOException {
  if (filter == null) {
    filter = new CacheDirectiveInfo.Builder().build();
  }
  if (filter.getPath() != null) {
    filter = new CacheDirectiveInfo.Builder(filter).
        setPath(new Path(getPathName(fixRelativePart(filter.getPath())))).
        build();
  }
  final RemoteIterator<CacheDirectiveEntry> iter =
      dfs.listCacheDirectives(filter);
  return new RemoteIterator<CacheDirectiveEntry>() {
    @Override
    public boolean hasNext() throws IOException {
      return iter.hasNext();
    }

    @Override
    public CacheDirectiveEntry next() throws IOException {
      // Although the paths we get back from the NameNode should always be
      // absolute, we call makeQualified to add the scheme and authority of
      // this DistributedFilesystem.
      CacheDirectiveEntry desc = iter.next();
      CacheDirectiveInfo info = desc.getInfo();
      Path p = info.getPath().makeQualified(getUri(), getWorkingDirectory());
      return new CacheDirectiveEntry(
          new CacheDirectiveInfo.Builder(info).setPath(p).build(),
          desc.getStats());
    }
  };
}
Example 2
Source File: DistributedFileSystem.java    From big-c with Apache License 2.0 5 votes vote down vote up 
/**
 * List cache directives.  Incrementally fetches results from the server.
 * 
 * @param filter Filter parameters to use when listing the directives, null to
 *               list all directives visible to us.
 * @return A RemoteIterator which returns CacheDirectiveInfo objects.
 */
public RemoteIterator<CacheDirectiveEntry> listCacheDirectives(
    CacheDirectiveInfo filter) throws IOException {
  if (filter == null) {
    filter = new CacheDirectiveInfo.Builder().build();
  }
  if (filter.getPath() != null) {
    filter = new CacheDirectiveInfo.Builder(filter).
        setPath(new Path(getPathName(fixRelativePart(filter.getPath())))).
        build();
  }
  final RemoteIterator<CacheDirectiveEntry> iter =
      dfs.listCacheDirectives(filter);
  return new RemoteIterator<CacheDirectiveEntry>() {
    @Override
    public boolean hasNext() throws IOException {
      return iter.hasNext();
    }

    @Override
    public CacheDirectiveEntry next() throws IOException {
      // Although the paths we get back from the NameNode should always be
      // absolute, we call makeQualified to add the scheme and authority of
      // this DistributedFilesystem.
      CacheDirectiveEntry desc = iter.next();
      CacheDirectiveInfo info = desc.getInfo();
      Path p = info.getPath().makeQualified(getUri(), getWorkingDirectory());
      return new CacheDirectiveEntry(
          new CacheDirectiveInfo.Builder(info).setPath(p).build(),
          desc.getStats());
    }
  };
}
Example 3
Source File: CacheAdmin.java    From hadoop with Apache License 2.0 4 votes vote down vote up 
@Override
public int run(Configuration conf, List<String> args) throws IOException {
  CacheDirectiveInfo.Builder builder =
      new CacheDirectiveInfo.Builder();
  String pathFilter = StringUtils.popOptionWithArgument("-path", args);
  if (pathFilter != null) {
    builder.setPath(new Path(pathFilter));
  }
  String poolFilter = StringUtils.popOptionWithArgument("-pool", args);
  if (poolFilter != null) {
    builder.setPool(poolFilter);
  }
  boolean printStats = StringUtils.popOption("-stats", args);
  String idFilter = StringUtils.popOptionWithArgument("-id", args);
  if (idFilter != null) {
    builder.setId(Long.parseLong(idFilter));
  }
  if (!args.isEmpty()) {
    System.err.println("Can't understand argument: " + args.get(0));
    return 1;
  }
  TableListing.Builder tableBuilder = new TableListing.Builder().
      addField("ID", Justification.RIGHT).
      addField("POOL", Justification.LEFT).
      addField("REPL", Justification.RIGHT).
      addField("EXPIRY", Justification.LEFT).
      addField("PATH", Justification.LEFT);
  if (printStats) {
    tableBuilder.addField("BYTES_NEEDED", Justification.RIGHT).
                addField("BYTES_CACHED", Justification.RIGHT).
                addField("FILES_NEEDED", Justification.RIGHT).
                addField("FILES_CACHED", Justification.RIGHT);
  }
  TableListing tableListing = tableBuilder.build();
  try {
    DistributedFileSystem dfs = AdminHelper.getDFS(conf);
    RemoteIterator<CacheDirectiveEntry> iter =
        dfs.listCacheDirectives(builder.build());
    int numEntries = 0;
    while (iter.hasNext()) {
      CacheDirectiveEntry entry = iter.next();
      CacheDirectiveInfo directive = entry.getInfo();
      CacheDirectiveStats stats = entry.getStats();
      List<String> row = new LinkedList<String>();
      row.add("" + directive.getId());
      row.add(directive.getPool());
      row.add("" + directive.getReplication());
      String expiry;
      // This is effectively never, round for nice printing
      if (directive.getExpiration().getMillis() >
          Expiration.MAX_RELATIVE_EXPIRY_MS / 2) {
        expiry = "never";
      } else {
        expiry = directive.getExpiration().toString();
      }
      row.add(expiry);
      row.add(directive.getPath().toUri().getPath());
      if (printStats) {
        row.add("" + stats.getBytesNeeded());
        row.add("" + stats.getBytesCached());
        row.add("" + stats.getFilesNeeded());
        row.add("" + stats.getFilesCached());
      }
      tableListing.addRow(row.toArray(new String[row.size()]));
      numEntries++;
    }
    System.out.print(String.format("Found %d entr%s%n",
        numEntries, numEntries == 1 ? "y" : "ies"));
    if (numEntries > 0) {
      System.out.print(tableListing);
    }
  } catch (IOException e) {
    System.err.println(AdminHelper.prettifyException(e));
    return 2;
  }
  return 0;
}
Example 4
Source File: CacheAdmin.java    From big-c with Apache License 2.0 4 votes vote down vote up 
@Override
public int run(Configuration conf, List<String> args) throws IOException {
  CacheDirectiveInfo.Builder builder =
      new CacheDirectiveInfo.Builder();
  String pathFilter = StringUtils.popOptionWithArgument("-path", args);
  if (pathFilter != null) {
    builder.setPath(new Path(pathFilter));
  }
  String poolFilter = StringUtils.popOptionWithArgument("-pool", args);
  if (poolFilter != null) {
    builder.setPool(poolFilter);
  }
  boolean printStats = StringUtils.popOption("-stats", args);
  String idFilter = StringUtils.popOptionWithArgument("-id", args);
  if (idFilter != null) {
    builder.setId(Long.parseLong(idFilter));
  }
  if (!args.isEmpty()) {
    System.err.println("Can't understand argument: " + args.get(0));
    return 1;
  }
  TableListing.Builder tableBuilder = new TableListing.Builder().
      addField("ID", Justification.RIGHT).
      addField("POOL", Justification.LEFT).
      addField("REPL", Justification.RIGHT).
      addField("EXPIRY", Justification.LEFT).
      addField("PATH", Justification.LEFT);
  if (printStats) {
    tableBuilder.addField("BYTES_NEEDED", Justification.RIGHT).
                addField("BYTES_CACHED", Justification.RIGHT).
                addField("FILES_NEEDED", Justification.RIGHT).
                addField("FILES_CACHED", Justification.RIGHT);
  }
  TableListing tableListing = tableBuilder.build();
  try {
    DistributedFileSystem dfs = AdminHelper.getDFS(conf);
    RemoteIterator<CacheDirectiveEntry> iter =
        dfs.listCacheDirectives(builder.build());
    int numEntries = 0;
    while (iter.hasNext()) {
      CacheDirectiveEntry entry = iter.next();
      CacheDirectiveInfo directive = entry.getInfo();
      CacheDirectiveStats stats = entry.getStats();
      List<String> row = new LinkedList<String>();
      row.add("" + directive.getId());
      row.add(directive.getPool());
      row.add("" + directive.getReplication());
      String expiry;
      // This is effectively never, round for nice printing
      if (directive.getExpiration().getMillis() >
          Expiration.MAX_RELATIVE_EXPIRY_MS / 2) {
        expiry = "never";
      } else {
        expiry = directive.getExpiration().toString();
      }
      row.add(expiry);
      row.add(directive.getPath().toUri().getPath());
      if (printStats) {
        row.add("" + stats.getBytesNeeded());
        row.add("" + stats.getBytesCached());
        row.add("" + stats.getFilesNeeded());
        row.add("" + stats.getFilesCached());
      }
      tableListing.addRow(row.toArray(new String[row.size()]));
      numEntries++;
    }
    System.out.print(String.format("Found %d entr%s%n",
        numEntries, numEntries == 1 ? "y" : "ies"));
    if (numEntries > 0) {
      System.out.print(tableListing);
    }
  } catch (IOException e) {
    System.err.println(AdminHelper.prettifyException(e));
    return 2;
  }
  return 0;
}