Package org.apache.cassandra.io

Examples of org.apache.cassandra.io.SSTableReader

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        StorageService.instance().initServer();

        // write a temporary SSTable, but don't register it
        Set<String> content = new HashSet<String>();
        content.add("key");
        SSTableReader sstable = SSTableUtils.writeSSTable(content);
        String tablename = sstable.getTableName();
        String cfname = sstable.getColumnFamilyName();

        // transfer
        Streaming.transferSSTables(LOCAL, Arrays.asList(sstable), tablename);

        // confirm that the SSTable was transferred and registered
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        ColumnFamily.serializer().serializeWithIndexes(cfamily, dob);
        writer.append(partitioner.decorateKey("rowB"), dob);
        dob.reset();
        cfamily.clear();
    
        SSTableReader reader = writer.closeAndOpenReader(0);
       
        // Export to JSON and verify
        File tempJson = File.createTempFile("Standard1", ".json");
        SSTableExport.export(reader, new PrintStream(tempJson.getPath()));
       
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        ColumnFamily.serializer().serializeWithIndexes(cfamily, dob);
        writer.append(partitioner.decorateKey("rowB"), dob);
        dob.reset();
        cfamily.clear();
    
        SSTableReader reader = writer.closeAndOpenReader(0);
       
        // Export to JSON and verify
        File tempJson = File.createTempFile("Super4", ".json");
        SSTableExport.export(reader, new PrintStream(tempJson.getPath()));
       
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        ColumnFamily.serializer().serializeWithIndexes(cfamily, dob);
        writer.append(partitioner.decorateKey("rowA"), dob);
        dob.reset();
        cfamily.clear();
       
        SSTableReader reader = writer.closeAndOpenReader(0);
       
        // Export to JSON and verify
        File tempJson = File.createTempFile("Standard1", ".json");
        SSTableExport.export(reader, new PrintStream(tempJson.getPath()));
       
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        String jsonUrl = getClass().getClassLoader().getResource("SimpleCF.json").getPath();
        File tempSS = createTemporarySSTable("Keyspace1", "Standard1");
        SSTableImport.importJson(jsonUrl, "Keyspace1", "Standard1", tempSS.getPath());

        // Verify results
        SSTableReader reader = SSTableAccessor.getSSTableReader(tempSS.getPath(), DatabaseDescriptor.getPartitioner());
        NamesQueryFilter qf = new NamesQueryFilter("rowA", new QueryPath("Standard1", null, null), "colAA".getBytes());
        ColumnFamily cf = qf.getSSTableColumnIterator(reader).getColumnFamily();
        assert Arrays.equals(cf.getColumn("colAA".getBytes()).value(), hexToBytes("76616c4141"));
    }
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        String jsonUrl = getClass().getClassLoader().getResource("SuperCF.json").getPath();
        File tempSS = createTemporarySSTable("Keyspace1", "Super4");
        SSTableImport.importJson(jsonUrl, "Keyspace1", "Super4", tempSS.getPath());
       
        // Verify results
        SSTableReader reader = SSTableAccessor.getSSTableReader(tempSS.getPath(), DatabaseDescriptor.getPartitioner());
        NamesQueryFilter qf = new NamesQueryFilter("rowA", new QueryPath("Super4", null, null), "superA".getBytes());
        ColumnFamily cf = qf.getSSTableColumnIterator(reader).getColumnFamily();
        IColumn superCol = cf.getColumn("superA".getBytes());
        assert Arrays.equals(superCol.getSubColumn("colAA".getBytes()).value(), hexToBytes("76616c75654141"));
    }
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        {
            String filename = file.getAbsolutePath();
            if (SSTable.deleteIfCompacted(filename))
                continue;

            SSTableReader sstable;
            try
            {
                sstable = SSTableReader.open(filename);
            }
            catch (IOException ex)
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     *  Find the maximum size file in the list .
     */
    SSTableReader getMaxSizeFile(Iterable<SSTableReader> sstables)
    {
        long maxSize = 0L;
        SSTableReader maxFile = null;
        for (SSTableReader sstable : sstables)
        {
            if (sstable.length() > maxSize)
            {
                maxSize = sstable.length();
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     * @throws IOException on failure to read/write input/output
     */
    public static void export(String ssTableFile, PrintStream outs, String[] keys, String[] excludes)
    throws IOException
    {
        SSTableReader reader = SSTableReader.open(ssTableFile);
        SSTableScanner scanner = reader.getScanner(INPUT_FILE_BUFFER_SIZE);
        IPartitioner<?> partitioner = DatabaseDescriptor.getPartitioner();   
        Set<String> excludeSet = new HashSet<String>(Arrays.asList(excludes));
        int i = 0;
       
        outs.println("{");
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     * @param outs PrintStream to write the output to
     * @throws IOException on failure to read/write input/output
     */
    public static void export(String ssTableFile, PrintStream outs, String[] excludes) throws IOException
    {
        SSTableReader reader = SSTableReader.open(ssTableFile);
        export(reader, outs, excludes);
    }
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Related Classes of org.apache.cassandra.io.SSTableReader

  • org.apache.cassandra.db.BinaryMemtable
  • org.apache.cassandra.db.ColumnFamilyStore
  • org.apache.cassandra.db.Memtable
  • org.apache.cassandra.db.Table$BootstrapCompletionHandler
  • org.apache.cassandra.db.TableTest
  • org.apache.cassandra.dht.Range
  • org.apache.cassandra.io.StreamingTest
  • org.apache.cassandra.io.util.BufferedRandomAccessFile
  • org.apache.cassandra.io.util.FileDataInput
  • org.apache.cassandra.io.util.MappedFileDataInput
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