List of readBlock() Examples

Examples of readBlock()

com.facebook.presto.block.rle.RunLengthBlockEncoding.readBlock()
com.facebook.presto.spi.block.BlockEncoding.readBlock()
Read a block from the specified input. The returned block should begin at the specified position.
com.facebook.presto.spi.block.VariableWidthBlockEncoding.readBlock()
eu.stratosphere.nephele.services.iomanager.BlockChannelReader.readBlock()
Issues a read request, which will asynchronously fill the given segment with the next block in the underlying file channel. Once the read request is fulfilled, the segment will be added to this reader's return queue. @param segment The segment to read the block into. @throws IOException Thrown, when the reader encounters an I/O error. Due to the asynchronous nature of thereader, the exception thrown here may have been caused by an earlier read request.
org.apache.flink.runtime.io.disk.iomanager.BlockChannelReader.readBlock()
Issues a read request, which will asynchronously fill the given segment with the next block in the underlying file channel. Once the read request is fulfilled, the segment will be added to this reader's return queue. @param segment The segment to read the block into. @throws IOException Thrown, when the reader encounters an I/O error. Due to the asynchronous nature of thereader, the exception thrown here may have been caused by an earlier read request.
org.apache.hadoop.hbase.io.hfile.HFileReaderV2.readBlock()
Read in a file block. @param dataBlockOffset offset to read. @param onDiskBlockSize size of the block @param cacheBlock @param pread Use positional read instead of seek+read (positional isbetter doing random reads whereas seek+read is better scanning). @param isCompaction is this block being read as part of a compaction @param expectedBlockType the block type we are expecting to read with thisread operation, or null to read whatever block type is available and avoid checking (that might reduce caching efficiency of encoded data blocks) @return Block wrapped in a ByteBuffer. @throws IOException
org.nfctools.spi.acs.AcrMfUlReaderWriter.readBlock()
org.nfctools.test.MemoryMapUlReaderWriter.readBlock()

Examples of com.facebook.presto.spi.block.VariableWidthBlockEncoding.readBlock()

        Block expectedBlock = expectedBlockBuilder.build();


        DynamicSliceOutput sliceOutput = new DynamicSliceOutput(1024);
        BlockEncoding blockEncoding = new VariableWidthBlockEncoding();
        blockEncoding.writeBlock(sliceOutput, expectedBlock);
        Block actualBlock = blockEncoding.readBlock(sliceOutput.slice().getInput());
        BlockAssertions.assertBlockEquals(VARCHAR, actualBlock, expectedBlock);
    }


    @Test
    public void testCreateBlockWriter()

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Examples of eu.stratosphere.nephele.services.iomanager.BlockChannelReader.readBlock()

          readSegments.add(emptyBuffers.take());
        }


        // read the first segment
        MemorySegment firstSeg = readSegments.remove(readSegments.size() - 1);
        reader.readBlock(firstSeg);
        firstSeg = reader.getReturnQueue().take();


        // create the read end reading one less buffer, because the first buffer is already read back
        readEnd = new ReadEnd(firstSeg, emptyBuffers, fullBuffers, reader, readSegments, segmentSize,
          numBuffersSpilled - 1);

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Examples of org.apache.flink.runtime.io.disk.iomanager.BlockChannelReader.readBlock()

      
      writer.close();
      
      final BlockChannelReader reader = this.ioManager.createBlockChannelReader(channelID);
      for (int i = 0; i < NUM_IOS; i++) {
        reader.readBlock(memSeg);
        memSeg = reader.getNextReturnedSegment();
        
        for (int pos = 0; pos < memSeg.size(); pos += 4) {
          if (memSeg.getInt(pos) != i) {
            Assert.fail("Read memory segment contains invalid data.");

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Examples of org.apache.flink.runtime.io.disk.iomanager.BlockChannelReader.readBlock()

        memSegs.add(writer.getNextReturnedSegment());
      }
      
      final BlockChannelReader reader = this.ioManager.createBlockChannelReader(channelID);
      while(!memSegs.isEmpty()) {
        reader.readBlock(memSegs.remove(0));
      }
      
      for (int i = 0; i < NUM_IOS; i++) {
        final MemorySegment memSeg = reader.getNextReturnedSegment();

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Examples of org.apache.flink.runtime.io.disk.iomanager.BlockChannelReader.readBlock()

        for (int pos = 0; pos < memSeg.size(); pos += 4) {
          if (memSeg.getInt(pos) != i) {
            Assert.fail("Read memory segment contains invalid data.");
          }
        }
        reader.readBlock(memSeg);
      }
      
      reader.closeAndDelete();
      
      // get back the memory

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Examples of org.apache.flink.runtime.io.disk.iomanager.BlockChannelReader.readBlock()

          readSegments.add(emptyBuffers.take());
        }


        // read the first segment
        MemorySegment firstSeg = readSegments.remove(readSegments.size() - 1);
        reader.readBlock(firstSeg);
        firstSeg = reader.getReturnQueue().take();


        // create the read end reading one less buffer, because the first buffer is already read back
        readEnd = new ReadEnd(firstSeg, emptyBuffers, fullBuffers, reader, readSegments, segmentSize,
          numBuffersSpilled - 1);

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Examples of org.apache.hadoop.hbase.io.hfile.HFileReaderV2.readBlock()

        if (prevBlock != null) {
          onDiskSize = prevBlock.getNextBlockOnDiskSizeWithHeader();
        }
        // Flags: don't cache the block, use pread, this is not a compaction.
        // Also, pass null for expected block type to avoid checking it.
        HFileBlock block = reader.readBlock(offset, onDiskSize, false, true,
          false, null);
        BlockCacheKey blockCacheKey = new BlockCacheKey(reader.getName(),
          offset);
        boolean isCached = cache.getBlock(blockCacheKey, true, false) != null;
        boolean shouldBeCached = cowType.shouldBeCached(block.getBlockType());

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Examples of org.apache.hadoop.hbase.io.hfile.HFileReaderV2.readBlock()

        if (prevBlock != null) {
          onDiskSize = prevBlock.getNextBlockOnDiskSizeWithHeader();
        }
        // Flags: don't cache the block, use pread, this is not a compaction.
        // Also, pass null for expected block type to avoid checking it.
        HFileBlock block = reader.readBlock(offset, onDiskSize, false, true,
          false, null);
        BlockCacheKey blockCacheKey = new BlockCacheKey(reader.getName(),
          offset);
        boolean isCached = cache.getBlock(blockCacheKey, true, false) != null;
        boolean shouldBeCached = cowType.shouldBeCached(block.getBlockType());

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Examples of org.apache.hadoop.hbase.io.hfile.HFileReaderV2.readBlock()

        if (prevBlock != null) {
          onDiskSize = prevBlock.getNextBlockOnDiskSizeWithHeader();
        }
        // Flags: don't cache the block, use pread, this is not a compaction.
        // Also, pass null for expected block type to avoid checking it.
        HFileBlock block = reader.readBlock(offset, onDiskSize, false, true,
          false, null);
        BlockCacheKey blockCacheKey = new BlockCacheKey(reader.getName(),
          offset);
        boolean isCached = cache.getBlock(blockCacheKey, true, false) != null;
        boolean shouldBeCached = cowType.shouldBeCached(block.getBlockType());

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Examples of org.apache.hadoop.hbase.io.hfile.HFileReaderV2.readBlock()

        if (prevBlock != null) {
          onDiskSize = prevBlock.getNextBlockOnDiskSizeWithHeader();
        }
        // Flags: don't cache the block, use pread, this is not a compaction.
        // Also, pass null for expected block type to avoid checking it.
        HFileBlock block = reader.readBlock(offset, onDiskSize, false, true,
          false, null);
        BlockCacheKey blockCacheKey = new BlockCacheKey(reader.getName(),
          offset);
        boolean isCached = cache.getBlock(blockCacheKey, true, false) != null;
        boolean shouldBeCached = cowType.shouldBeCached(block.getBlockType());

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