Package org.apache.cassandra.io.util

Examples of org.apache.cassandra.io.util.MappedFileDataInput

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            input = new BufferedRandomAccessFile(indexFilename(), "r");
            ((BufferedRandomAccessFile)input).seek(p);
        }
        else
        {
            input = new MappedFileDataInput(indexBuffers[bufferIndex(p)], indexFilename(), (int)(p % BUFFER_SIZE));
        }
        try
        {
            int i = 0;
            do
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        {
            BufferedRandomAccessFile file = new BufferedRandomAccessFile(path, "r", bufferSize);
            file.seek(info.position);
            return file;
        }
        return new MappedFileDataInput(buffers[bufferIndex(info.position)], path, (int) (info.position % BUFFER_SIZE));
    }
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    private FileDataInput indexInputAt(long indexPosition)
    {
        if (indexPosition > indexSummary.getLastIndexPosition())
            return null;
        int bufferIndex = bufferIndex(indexPosition);
        return new MappedFileDataInput(indexBuffers[bufferIndex], indexFilename(), BUFFER_SIZE * bufferIndex, (int)(indexPosition % BUFFER_SIZE));
    }
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        {
            BufferedRandomAccessFile file = new BufferedRandomAccessFile(path, "r", bufferSize);
            file.seek(info.position);
            return file;
        }
        return new MappedFileDataInput(buffers[bufferIndex(info.position)], path, BUFFER_SIZE * (info.position / BUFFER_SIZE), (int) (info.position % BUFFER_SIZE));
    }
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            tmpFile2.deleteOnExit();

            new FileOutputStream(tmpFile1).write(out1.getData()); // writing data from row1
            new FileOutputStream(tmpFile2).write(out2.getData()); // writing data from row2

            MappedFileDataInput in1 = new MappedFileDataInput(new FileInputStream(tmpFile1), tmpFile1.getAbsolutePath(), 0, 0);
            MappedFileDataInput in2 = new MappedFileDataInput(new FileInputStream(tmpFile2), tmpFile2.getAbsolutePath(), 0, 0);

            // row key
            assertEquals(ByteBufferUtil.readWithShortLength(in1), ByteBufferUtil.readWithShortLength(in2));

            // cf metadata
            ColumnFamily cf1 = TreeMapBackedSortedColumns.factory.create(cfs.metadata);
            ColumnFamily cf2 = TreeMapBackedSortedColumns.factory.create(cfs.metadata);
            cf1.delete(DeletionInfo.serializer().deserializeFromSSTable(in1, Descriptor.Version.CURRENT));
            cf2.delete(DeletionInfo.serializer().deserializeFromSSTable(in2, Descriptor.Version.CURRENT));
            assertEquals(cf1.deletionInfo(), cf2.deletionInfo());
            // columns
            while (true)
            {
                Column c1 = (Column)Column.onDiskSerializer().deserializeFromSSTable(in1, Descriptor.Version.CURRENT);
                Column c2 = (Column)Column.onDiskSerializer().deserializeFromSSTable(in2, Descriptor.Version.CURRENT);
                assert Objects.equal(c1, c2) : c1.getString(cfs.metadata.comparator) + " != " + c2.getString(cfs.metadata.comparator);
                if (c1 == null)
                    break;
            }
            // that should be everything
            assert in1.available() == 0;
            assert in2.available() == 0;
        }
    }
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Related Classes of org.apache.cassandra.io.util.MappedFileDataInput

  • org.apache.cassandra.io.LazilyCompactedRowTest
  • org.apache.cassandra.io.SSTableReader
  • java.nio.ByteBuffer
  • java.nio.channels.FileChannel
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