Examples of HalfStoreFileReader

org.apache.hadoop.hbase.io.HalfStoreFileReader
A facade for a {@link org.apache.hadoop.hbase.io.hfile.HFile.Reader} that serves upeither the top or bottom half of a HFile where 'bottom' is the first half of the file containing the keys that sort lowest and 'top' is the second half of the file with keys that sort greater than those of the bottom half. The top includes the split files midkey, of the key that follows if it does not exist in the file.
This type works in tandem with the {@link Reference} type. This classis used reading while Reference is used writing.
This file is not splitable. Calls to {@link #midkey()} return null.

Examples of org.apache.hadoop.hbase.io.HalfStoreFileReader

  private Reader open() throws IOException {
    if (this.reader != null) {
      throw new IllegalAccessError("Already open");
    }
    if (isReference()) {
      this.reader = new HalfStoreFileReader(this.fs, this.referencePath,
          this.cacheConf, this.reference,
          dataBlockEncoder.getEncodingInCache());
    } else {
      this.reader = new Reader(this.fs, this.path, this.cacheConf,
          dataBlockEncoder.getEncodingInCache());

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Examples of org.apache.hadoop.hbase.io.HalfStoreFileReader

  private static void copyHFileHalf(
      Configuration conf, Path inFile, Path outFile, Reference reference,
      HColumnDescriptor familyDescriptor)
  throws IOException {
    FileSystem fs = inFile.getFileSystem(conf);
    HalfStoreFileReader halfReader = null;
    HFile.Writer halfWriter = null;
    try {
      halfReader = new HalfStoreFileReader(fs, inFile, null, reference);
      Map<byte[], byte[]> fileInfo = halfReader.loadFileInfo();
      
      int blocksize = familyDescriptor.getBlocksize();
      Algorithm compression = familyDescriptor.getCompression();
      BloomType bloomFilterType = familyDescriptor.getBloomFilterType();
      
      halfWriter = new StoreFile.Writer(
          fs, outFile, blocksize, compression, conf, KeyValue.COMPARATOR,
          bloomFilterType, 0);
      HFileScanner scanner = halfReader.getScanner(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());
        }
      }
    } finally {
      if (halfWriter != null) halfWriter.close();
      if (halfReader != null) halfReader.close();
    }    
  }

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Examples of org.apache.hadoop.hbase.io.HalfStoreFileReader

  throws IOException {
    if (this.reader != null) {
      throw new IllegalAccessError("Already open");
    }
    if (isReference()) {
      this.reader = new HalfStoreFileReader(this.fs, this.referencePath,
          getBlockCache(), this.reference);
    } else {
      this.reader = new StoreFile.Reader(this.fs, this.path, getBlockCache(),
          this.inMemory);
    }

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Examples of org.apache.hadoop.hbase.io.HalfStoreFileReader

    if (this.reader != null) {
      throw new IllegalAccessError("Already open");
    }
    if (isReference()) {
      if (this.link != null) {
        this.reader = new HalfStoreFileReader(this.fs, this.referencePath, this.link,
          this.cacheConf, this.reference, dataBlockEncoder.getEncodingInCache());
      } else {
        this.reader = new HalfStoreFileReader(this.fs, this.referencePath,
          this.cacheConf, this.reference, dataBlockEncoder.getEncodingInCache());
      }
    } else if (isLink()) {
      long size = link.getFileStatus(fs).getLen();
      this.reader = new Reader(this.fs, this.path, link, size, this.cacheConf,

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Examples of org.apache.hadoop.hbase.io.HalfStoreFileReader

  private static void copyHFileHalf(
      Configuration conf, Path inFile, Path outFile, Reference reference,
      HColumnDescriptor familyDescriptor)
  throws IOException {
    FileSystem fs = inFile.getFileSystem(conf);
    HalfStoreFileReader halfReader = null;
    StoreFile.Writer halfWriter = null;
    try {
      halfReader = new HalfStoreFileReader(fs, inFile, null, reference);
      Map<byte[], byte[]> fileInfo = halfReader.loadFileInfo();


      // We overestimate the number of entries in each split as the number
      // of entries in the parent file.
      int maxBloomEntries = halfReader.getFilterEntries();


      int blocksize = familyDescriptor.getBlocksize();
      Algorithm compression = familyDescriptor.getCompression();
      BloomType bloomFilterType = familyDescriptor.getBloomFilterType();


      halfWriter = new StoreFile.Writer(
          fs, outFile, blocksize, compression, conf, KeyValue.COMPARATOR,
          bloomFilterType, maxBloomEntries);
      HFileScanner scanner = halfReader.getScanner(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());
        }
      }
    } finally {
      if (halfWriter != null) halfWriter.close();
      if (halfReader != null) halfReader.close();
    }
  }

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Examples of org.apache.hadoop.hbase.io.HalfStoreFileReader

  private Reader open() throws IOException {
    if (this.reader != null) {
      throw new IllegalAccessError("Already open");
    }
    if (isReference()) {
      this.reader = new HalfStoreFileReader(this.fs, this.referencePath,
          getBlockCache(), this.reference);
    } else {
      this.reader = new Reader(this.fs, this.path, getBlockCache(),
          this.inMemory);
    }

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Examples of org.apache.hadoop.hbase.io.HalfStoreFileReader

      Configuration conf, Path inFile, Path outFile, Reference reference,
      HColumnDescriptor familyDescriptor)
  throws IOException {
    FileSystem fs = inFile.getFileSystem(conf);
    CacheConfig cacheConf = new CacheConfig(conf);
    HalfStoreFileReader halfReader = null;
    StoreFile.Writer halfWriter = null;
    try {
      halfReader = new HalfStoreFileReader(fs, inFile, cacheConf, reference, conf);
      Map<byte[], byte[]> fileInfo = halfReader.loadFileInfo();


      int blocksize = familyDescriptor.getBlocksize();
      Algorithm compression = familyDescriptor.getCompression();
      BloomType bloomFilterType = familyDescriptor.getBloomFilterType();
      HFileContext hFileContext = new HFileContextBuilder()
                                  .withCompression(compression)
                                  .withChecksumType(HStore.getChecksumType(conf))
                                  .withBytesPerCheckSum(HStore.getBytesPerChecksum(conf))
                                  .withBlockSize(blocksize)
                                  .withDataBlockEncoding(familyDescriptor.getDataBlockEncoding())
                                  .build();
      halfWriter = new StoreFile.WriterBuilder(conf, cacheConf,
          fs)
              .withFilePath(outFile)
              .withBloomType(bloomFilterType)
              .withFileContext(hFileContext)
              .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());
        }
      }
    } finally {
      if (halfWriter != null) halfWriter.close();
      if (halfReader != null) halfReader.close(cacheConf.shouldEvictOnClose());
    }
  }

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Examples of org.apache.hadoop.hbase.io.HalfStoreFileReader

  private static void copyHFileHalf(
      Configuration conf, Path inFile, Path outFile, Reference reference,
      HColumnDescriptor familyDescriptor)
  throws IOException {
    FileSystem fs = inFile.getFileSystem(conf);
    HalfStoreFileReader halfReader = null;
    StoreFile.Writer halfWriter = null;
    try {
      halfReader = new HalfStoreFileReader(fs, inFile, null, reference);
      Map<byte[], byte[]> fileInfo = halfReader.loadFileInfo();


      int blocksize = familyDescriptor.getBlocksize();
      Algorithm compression = familyDescriptor.getCompression();
      BloomType bloomFilterType = familyDescriptor.getBloomFilterType();


      halfWriter = new StoreFile.Writer(
          fs, outFile, blocksize, compression, conf, KeyValue.COMPARATOR,
          bloomFilterType, 0);
      HFileScanner scanner = halfReader.getScanner(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());
        }
      }
    } finally {
      if (halfWriter != null) halfWriter.close();
      if (halfReader != null) halfReader.close();
    }
  }

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Examples of org.apache.hadoop.hbase.io.HalfStoreFileReader

  private Reader open() throws IOException {
    if (this.reader != null) {
      throw new IllegalAccessError("Already open");
    }
    if (isReference()) {
      this.reader = new HalfStoreFileReader(this.fs, this.referencePath,
          getBlockCache(), this.reference);
    } else {
      this.reader = new Reader(this.fs, this.path, getBlockCache(),
          this.inMemory);
    }

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Examples of org.apache.hadoop.hbase.io.HalfStoreFileReader

      status = fileStatus;
    }
    long length = status.getLen();
    if (this.reference != null) {
      hdfsBlocksDistribution = computeRefFileHDFSBlockDistribution(fs, reference, status);
      return new HalfStoreFileReader(
          fs, this.getPath(), in, length, cacheConf, reference);
    } else {
      hdfsBlocksDistribution = FSUtils.computeHDFSBlocksDistribution(fs, status, 0, length);
      return new StoreFile.Reader(fs, this.getPath(), in, length, cacheConf);
    }

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