Package org.apache.cassandra.io.util

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

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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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                if (replayPosition < 0)
                {
                    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, byte[] bytes, String key) throws IOException
    {
        BufferedRandomAccessFile file = new BufferedRandomAccessFile(sstable.path, "r");
        file.seek(sstable.getPosition(sstable.partitioner.decorateKey(key)).position);
        assert key.equals(file.readUTF());
        int size = file.readInt();
        byte[] bytes2 = new byte[size];
        file.readFully(bytes2);
        assert Arrays.equals(bytes2, bytes);
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        List<String> keys = new ArrayList<String>(map.keySet());
        Collections.shuffle(keys);
        BufferedRandomAccessFile file = new BufferedRandomAccessFile(sstable.path, "r");
        for (String key : keys)
        {
            file.seek(sstable.getPosition(sstable.partitioner.decorateKey(key)).position);
            assert key.equals(file.readUTF());
            int size = file.readInt();
            byte[] bytes2 = new byte[size];
            file.readFully(bytes2);
            assert Arrays.equals(bytes2, map.get(key));
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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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            /* 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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                }
                else
                {
                    input.readUTF();
                    nextDataPosition = input.readLong();
                    input.seek(nextIndexPosition);
                }
                indexSummary.maybeAddEntry(decoratedKey, dataPosition, nextDataPosition - dataPosition, indexPosition, nextIndexPosition);
            }
            indexSummary.complete();
        }
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