Package org.apache.hadoop.hbase.io.hfile

Examples of org.apache.hadoop.hbase.io.hfile.HFileScanner

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    StoreFile sf = new StoreFile(fs, writer.getPath(),
      util.getConfiguration(), cacheConf, BloomType.NONE);

    StoreFile.Reader reader = sf.createReader();
    HFileScanner scanner = reader.getScanner(false, true);

    FaultyInputStream inStream = faultyfs.inStreams.get(0).get();
    assertNotNull(inStream);

    scanner.seekTo();
    // Do at least one successful read
    assertTrue(scanner.next());

    faultyfs.startFaults();

    try {
      int scanned=0;
      while (scanner.next()) {
        scanned++;
      }
      fail("Scanner didn't throw after faults injected");
    } catch (IOException ioe) {
      LOG.info("Got expected exception", ioe);
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              .withDataBlockEncoder(dataBlockEncoder)
              .withBloomType(bloomFilterType)
              .withChecksumType(Store.getChecksumType(conf))
              .withBytesPerChecksum(Store.getBytesPerChecksum(conf))
              .build();
      HFileScanner scanner = halfReader.getScanner(false, false, false);
      scanner.seekTo();
      do {
        KeyValue kv = scanner.getKeyValue();
        halfWriter.append(kv);
      } while (scanner.next());

      for (Map.Entry<byte[],byte[]> entry : fileInfo.entrySet()) {
        if (shouldCopyHFileMetaKey(entry.getKey())) {
          halfWriter.appendFileInfo(entry.getKey(), entry.getValue());
        }
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  private int verifyHFile(Path p) throws IOException {
    Configuration conf = util.getConfiguration();
    HFile.Reader reader = HFile.createReader(
        p.getFileSystem(conf), p, new CacheConfig(conf));
    reader.loadFileInfo();
    HFileScanner scanner = reader.getScanner(false, false);
    scanner.seekTo();
    int count = 0;
    do {
      count++;
    } while (scanner.next());
    assertTrue(count > 0);
    reader.close();
    return count;
  }
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              .withDataBlockEncoder(dataBlockEncoder)
              .withBloomType(bloomFilterType)
              .withChecksumType(Store.getChecksumType(conf))
              .withBytesPerChecksum(Store.getBytesPerChecksum(conf))
              .build();
      HFileScanner scanner = halfReader.getScanner(false, false, false);
      scanner.seekTo();
      do {
        KeyValue kv = scanner.getKeyValue();
        halfWriter.append(kv);
      } while (scanner.next());

      for (Map.Entry<byte[],byte[]> entry : fileInfo.entrySet()) {
        if (shouldCopyHFileMetaKey(entry.getKey())) {
          halfWriter.appendFileInfo(entry.getKey(), entry.getValue());
        }
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            + this.region);
      }

      if (verifyBulkLoads) {
        KeyValue prevKV = null;
        HFileScanner scanner = reader.getScanner(false, false, false);
        scanner.seekTo();
        do {
          KeyValue kv = scanner.getKeyValue();
          if (prevKV != null) {
            if (Bytes.compareTo(prevKV.getBuffer(), prevKV.getRowOffset(),
                prevKV.getRowLength(), kv.getBuffer(), kv.getRowOffset(),
                kv.getRowLength()) > 0) {
              throw new InvalidHFileException("Previous row is greater than"
                  + " current row: path=" + srcPath + " previous="
                  + Bytes.toStringBinary(prevKV.getKey()) + " current="
                  + Bytes.toStringBinary(kv.getKey()));
            }
            if (Bytes.compareTo(prevKV.getBuffer(), prevKV.getFamilyOffset(),
                prevKV.getFamilyLength(), kv.getBuffer(), kv.getFamilyOffset(),
                kv.getFamilyLength()) != 0) {
              throw new InvalidHFileException("Previous key had different"
                  + " family compared to current key: path=" + srcPath
                  + " previous=" + Bytes.toStringBinary(prevKV.getFamily())
                  + " current=" + Bytes.toStringBinary(kv.getFamily()));
            }
          }
          prevKV = kv;
        } while (scanner.next());
      }
    } finally {
      if (reader != null) reader.close();
    }
  }
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      // If the row we're looking for is past the end of file, set search key to
      // last key. TODO: Cache last and first key rather than make each time.
      firstOnRow = new KeyValue(lastKV.getRow(), HConstants.LATEST_TIMESTAMP);
    }
    // Get a scanner that caches blocks and that uses pread.
    HFileScanner scanner = r.getScanner(true, true, false);
    // Seek scanner.  If can't seek it, return.
    if (!seekToScanner(scanner, firstOnRow, firstKV)) return;
    // If we found candidate on firstOnRow, just return. THIS WILL NEVER HAPPEN!
    // Unlikely that there'll be an instance of actual first row in table.
    if (walkForwardInSingleRow(scanner, firstOnRow, state)) return;
    // If here, need to start backing up.
    while (scanner.seekBefore(firstOnRow.getBuffer(), firstOnRow.getKeyOffset(),
       firstOnRow.getKeyLength())) {
      KeyValue kv = scanner.getKeyValue();
      if (!state.isTargetTable(kv)) break;
      if (!state.isBetterCandidate(kv)) break;
      // Make new first on row.
      firstOnRow = new KeyValue(kv.getRow(), HConstants.LATEST_TIMESTAMP);
      // Seek scanner.  If can't seek it, break.
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        BloomType.ROWCOL, null);
    store.passSchemaMetricsTo(sf);
    HFileReaderV2 reader = (HFileReaderV2) sf.createReader().getHFileReader();
    try {
      // Open a scanner with (on read) caching disabled
      HFileScanner scanner = reader.getScanner(false, false);
      assertTrue(testDescription, scanner.seekTo());
      // Cribbed from io.hfile.TestCacheOnWrite
      long offset = 0;
      HFileBlock prevBlock = null;
      while (offset < reader.getTrailer().getLoadOnOpenDataOffset()) {
        long onDiskSize = -1;
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              .withDataBlockEncoder(dataBlockEncoder)
              .withBloomType(bloomFilterType)
              .withChecksumType(Store.getChecksumType(conf))
              .withBytesPerChecksum(Store.getBytesPerChecksum(conf))
              .build();
      HFileScanner scanner = halfReader.getScanner(false, false, false);
      scanner.seekTo();
      do {
        KeyValue kv = scanner.getKeyValue();
        halfWriter.append(kv);
      } while (scanner.next());

      for (Map.Entry<byte[],byte[]> entry : fileInfo.entrySet()) {
        if (shouldCopyHFileMetaKey(entry.getKey())) {
          halfWriter.appendFileInfo(entry.getKey(), entry.getValue());
        }
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  private int verifyHFile(Path p) throws IOException {
    Configuration conf = util.getConfiguration();
    HFile.Reader reader = HFile.createReader(
        p.getFileSystem(conf), p, new CacheConfig(conf));
    reader.loadFileInfo();
    HFileScanner scanner = reader.getScanner(false, false);
    scanner.seekTo();
    int count = 0;
    do {
      count++;
    } while (scanner.next());
    assertTrue(count > 0);
    reader.close();
    return count;
  }
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            + this.region);
      }

      if (verifyBulkLoads) {
        KeyValue prevKV = null;
        HFileScanner scanner = reader.getScanner(false, false, false);
        scanner.seekTo();
        do {
          KeyValue kv = scanner.getKeyValue();
          if (prevKV != null) {
            if (Bytes.compareTo(prevKV.getBuffer(), prevKV.getRowOffset(),
                prevKV.getRowLength(), kv.getBuffer(), kv.getRowOffset(),
                kv.getRowLength()) > 0) {
              throw new InvalidHFileException("Previous row is greater than"
                  + " current row: path=" + srcPath + " previous="
                  + Bytes.toStringBinary(prevKV.getKey()) + " current="
                  + Bytes.toStringBinary(kv.getKey()));
            }
            if (Bytes.compareTo(prevKV.getBuffer(), prevKV.getFamilyOffset(),
                prevKV.getFamilyLength(), kv.getBuffer(), kv.getFamilyOffset(),
                kv.getFamilyLength()) != 0) {
              throw new InvalidHFileException("Previous key had different"
                  + " family compared to current key: path=" + srcPath
                  + " previous=" + Bytes.toStringBinary(prevKV.getFamily())
                  + " current=" + Bytes.toStringBinary(kv.getFamily()));
            }
          }
          prevKV = kv;
        } while (scanner.next());
      }
    } finally {
      if (reader != null) reader.close();
    }
  }
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Related Classes of org.apache.hadoop.hbase.io.hfile.HFileScanner

  • org.apache.crunch.io.hbase.HFileReaderFactory
  • org.apache.hadoop.hbase.HFilePerformanceEvaluation$GaussianRandomReadBenchmark
  • org.apache.hadoop.hbase.HFilePerformanceEvaluation$UniformRandomReadBenchmark
  • org.apache.hadoop.hbase.HFilePerformanceEvaluation$UniformRandomSmallScan
  • org.apache.hadoop.hbase.index.io.IndexHalfStoreFileReader
  • org.apache.hadoop.hbase.index.io.TestIndexHalfStoreFileReader
  • org.apache.hadoop.hbase.index.mapreduce.IndexLoadIncrementalHFile
  • org.apache.hadoop.hbase.io.HalfHFileReader
  • org.apache.hadoop.hbase.io.HalfStoreFileReader
  • org.apache.hadoop.hbase.io.TestHalfStoreFileReader
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