Example usage for org.apache.cassandra.io.sstable ISSTableScanner close

Introduction

In this page you can find the example usage for org.apache.cassandra.io.sstable ISSTableScanner close.

Prototype

public void close();

Source Link

Usage

From source file:com.scylladb.tools.SSTableToCQL.java

License:Open Source License

public void stream(File directoryOrSStable) throws IOException, ConfigurationException {
    RowBuilder builder = new RowBuilder(client);

    logger.info("Opening sstables and calculating sections to stream");

    Map<InetAddress, Collection<Range<Token>>> ranges = client.getEndpointRanges();
    Collection<SSTableReader> sstables = openSSTables(directoryOrSStable);

    // Hack. Must do because Range mangling code in cassandra is
    // broken, and does not preserve input range objects internal
    // "partitioner" field.
    DatabaseDescriptor.setPartitioner(client.getPartitioner());
    try {/*from   w w w.j  a  va2  s. com*/
        for (SSTableReader reader : sstables) {
            if (ranges == null || ranges.isEmpty()) {
                ISSTableScanner scanner = reader.getScanner();
                try {
                    process(builder, null, scanner);
                } finally {
                    scanner.close();
                }
            } else {
                for (Map.Entry<InetAddress, Collection<Range<Token>>> e : ranges.entrySet()) {
                    ISSTableScanner scanner = reader.getScanner(e.getValue(), null);
                    try {
                        process(builder, e.getKey(), scanner);
                    } finally {
                        scanner.close();
                    }
                }
            }
        }

    } finally {
        client.finish();
    }
}

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From source file:org.jasonstack.cassandra.devops.TomnStoneScanner.java

License:Apache License

private static void run(Descriptor desc) throws IOException {
    CFMetaData cfm = CFMetaData.sparseCFMetaData(desc.ksname, desc.cfname, UTF8Type.instance);
    SSTableReader reader = SSTableReader.open(desc, cfm);
    ISSTableScanner scanner = reader.getScanner();

    long totalTombstones = 0, totalColumns = 0;

    while (scanner.hasNext()) {
        // for each partition
        SSTableIdentityIterator row = (SSTableIdentityIterator) scanner.next();

        int tombstonesCount = 0, columnsCount = 0;
        while (row.hasNext()) {
            // for each column in partition
            OnDiskAtom column = row.next();
            if (column instanceof BufferDeletedCell) {
                tombstonesCount++;/*from  w w w . j a v a  2 s. c  o m*/
            }
            columnsCount++;
        }
        totalTombstones += tombstonesCount;
        totalColumns += columnsCount;

        if (tombstonesCount > 0) {
            String key;
            try {
                key = UTF8Type.instance.getString(row.getKey().getKey());
            } catch (RuntimeException e) {
                key = BytesType.instance.getString(row.getKey().getKey());
            }
            //System.out.printf("PartitionKey: %s, Tombstones(Total): %d (%d)%n", paritionKey, tombstonesCount, columnsCount);
            TombstoneMetric count = new TombstoneMetric(desc.cfname, key, tombstonesCount, columnsCount);
            collector.add(count);
        }
    }
    //System.out.printf("Result: %d tombstones out of total %d columns", totalTombstones, totalColumns);
    scanner.close();
}

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