Package org.apache.cassandra.io.util

Examples of org.apache.cassandra.io.util.BufferedRandomAccessFile.seek()

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                    // (see https://issues.apache.org/jira/browse/CASSANDRA-2285)
                    logger.debug("skipping replay of fully-flushed {}", file);
                    continue;
                }

                reader.seek(replayPosition);

                if (logger.isDebugEnabled())
                    logger.debug("Replaying " + file + " starting at " + reader.getFilePointer());

                /* read the logs populate RowMutation and apply */
 
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        }
        // verify that we do indeed have multiple index entries
        SSTableReader sstable = cfStore.getSSTables().iterator().next();
        long position = sstable.getPosition(key, SSTableReader.Operator.EQ);
        BufferedRandomAccessFile file = new BufferedRandomAccessFile(sstable.getFilename(), "r");
        file.seek(position);
        assert ByteBufferUtil.readWithShortLength(file).equals(key.key);
        SSTableReader.readRowSize(file, sstable.descriptor);
        IndexHelper.skipBloomFilter(file);
        ArrayList<IndexHelper.IndexInfo> indexes = IndexHelper.deserializeIndex(file);
        assert indexes.size() > 2;
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            /* seek to the lowest position where any CF has non-flushed data */
            int lowPos = CommitLogHeader.getLowestPosition(clHeader);
            if (lowPos == 0)
                continue;

            reader.seek(lowPos);
            if (logger.isDebugEnabled())
                logger.debug("Replaying " + file + " starting at " + lowPos);

            /* read the logs populate RowMutation and apply */
            while (!reader.isEOF())
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                            spannedIndexDataPositions = new HashMap<KeyPosition, PositionSize>();
                        }
                        // read the next index entry to see how big the row is corresponding to the current, mmap-segment-spanning one
                        input.readUTF();
                        long nextDataPosition = input.readLong();
                        input.seek(nextIndexPosition);
                        spannedIndexDataPositions.put(info, new PositionSize(dataPosition, nextDataPosition - dataPosition));
                    }
                }
            }
        }
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            return 0;
        }

        // can't use a MappedFileDataInput here, since we might cross a segment boundary while scanning
        BufferedRandomAccessFile input = new BufferedRandomAccessFile(indexFilename(path), "r");
        input.seek(sampledPosition.position);
        try
        {
            while (true)
            {
                DecoratedKey indexDecoratedKey;
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            return null;

        if (buffers == null || (bufferIndex(info.position) != bufferIndex(info.position + info.size)))
        {
            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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            /* seek to the lowest position where any CF has non-flushed data */
            int lowPos = CommitLogHeader.getLowestPosition(clHeader);
            if (lowPos == 0)
                break;

            reader.seek(lowPos);
            if (logger.isDebugEnabled())
                logger.debug("Replaying " + file + " starting at " + lowPos);

            /* read the logs populate RowMutation and apply */
            while (!reader.isEOF())
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                    // (see https://issues.apache.org/jira/browse/CASSANDRA-2285)
                    logger.debug("skipping replay of fully-flushed {}", file);
                    continue;
                }

                reader.seek(replayPosition);

                if (logger.isDebugEnabled())
                    logger.debug("Replaying " + file + " starting at " + reader.getFilePointer());

                /* read the logs populate RowMutation and apply */
 
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    }

    private void verifySingle(SSTableReader sstable, ByteBuffer bytes, ByteBuffer key) throws IOException
    {
        BufferedRandomAccessFile file = new BufferedRandomAccessFile(sstable.getFilename(), "r");
        file.seek(sstable.getPosition(sstable.partitioner.decorateKey(key), SSTableReader.Operator.EQ));
        assert key.equals(ByteBufferUtil.readWithShortLength(file));
        int size = (int)SSTableReader.readRowSize(file, sstable.descriptor);
        byte[] bytes2 = new byte[size];
        file.readFully(bytes2);
        assert ByteBuffer.wrap(bytes2).equals(bytes);
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        List<ByteBuffer> keys = new ArrayList<ByteBuffer>(map.keySet());
        Collections.shuffle(keys);
        BufferedRandomAccessFile file = new BufferedRandomAccessFile(sstable.getFilename(), "r");
        for (ByteBuffer key : keys)
        {
            file.seek(sstable.getPosition(sstable.partitioner.decorateKey(key), SSTableReader.Operator.EQ));
            assert key.equals( ByteBufferUtil.readWithShortLength(file));
            int size = (int)SSTableReader.readRowSize(file, sstable.descriptor);
            byte[] bytes2 = new byte[size];
            file.readFully(bytes2);
            assert Arrays.equals(bytes2, map.get(key).array());
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