Examples of org.apache.cassandra.io.SSTableReader

org.apache.cassandra.io.SSTableReader
SSTableReaders are open()ed by Table.onStart; after that they are created by SSTableWriter.renameAndOpen. Do not re-call open() on existing SSTable files; use the references kept by ColumnFamilyStore post-start instead.

            ColumnFamily.serializer().serializeWithIndexes(entry.getValue(), buffer);
            /* Now write the key and value to disk */
            writer.append(entry.getKey(), buffer);
        }


        SSTableReader ssTable = writer.closeAndOpenReader();
        logger.info(String.format("Completed flushing %s (%d bytes)",
                                  ssTable.getFilename(), new File(ssTable.getFilename()).length()));
        return ssTable;
    }

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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();
        List<String> filenames = sstable.getAllFilenames();


        // transfer
        StreamOut.transferSSTables(LOCAL, filenames, tablename);


        // confirm that the SSTable was transferred and registered

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                ColumnFamily.serializer().serializeWithIndexes(columnFamily, buffer);
                /* Now write the key and value to disk */
                writer.append(partitioner.decorateKey(key), buffer);
            }
        }
        SSTableReader ssTable = writer.closeAndOpenReader();
        cfStore.onMemtableFlush(cLogCtx);
        cfStore.storeLocation(ssTable);
        buffer.close();
        isFlushed_ = true;
        logger_.info("Completed flushing " + this);

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        // compact so we have a big row with more than the minimum index count
        if (cfStore.getSSTables().size() > 1)
        {
            cfStore.doCompaction(2, cfStore.getSSTables().size());
        }
        SSTableReader sstable = cfStore.getSSTables().iterator().next();
        long position = sstable.getPosition(key);
        BufferedRandomAccessFile file = new BufferedRandomAccessFile(sstable.getFilename(), "r");
        file.seek(position);
        assert file.readUTF().equals(key);
        file.readInt();
        IndexHelper.skipBloomFilter(file);
        ArrayList<IndexHelper.IndexInfo> indexes = IndexHelper.deserializeIndex(file);

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                File file = new File( streamContext.getTargetFile() );
                String fileName = file.getName();
                String [] temp = fileName.split("-");
                
                //Open the file to see if all parts are now here
                SSTableReader sstable = null;
                try 
                {
                    sstable = SSTableWriter.renameAndOpen(streamContext.getTargetFile());
                    
                    //TODO add a sanity check that this sstable has all its parts and is ok
                    Table.open(tableName).getColumnFamilyStore(temp[0]).addToList(sstable);
                    logger_.info("Bootstrap added " + sstable.getFilename());
                }
                catch (IOException e)
                {
                    logger_.error("Not able to bootstrap with file " + streamContext.getTargetFile(), e);                    
                }

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            ColumnFamily.serializer().serializeWithIndexes(entry.getValue(), buffer);
            /* Now write the key and value to disk */
            writer.append(entry.getKey(), buffer);
        }


        SSTableReader ssTable = writer.closeAndOpenReader(DatabaseDescriptor.getKeysCachedFraction(getTableName(), cfs.getColumnFamilyName()));
        logger.info("Completed flushing " + ssTable.getFilename());
        return ssTable;
    }

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        {
            byte[] bytes = columnFamilies.get(key);
            assert bytes.length > 0;
            writer.append(key, bytes);
        }
        SSTableReader sstable = writer.closeAndOpenReader(DatabaseDescriptor.getKeysCachedFraction(cfs.getTable().name, cfs.getColumnFamilyName()));
        logger.info("Completed flushing " + writer.getFilename());
        return sstable;
    }

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     * @throws IOException on failure to read/write input/output
     */
    public static void export(String ssTableFile, PrintStream outs, String[] keys)
    throws IOException
    {
        SSTableReader reader = SSTableReader.open(ssTableFile);
        SSTableScanner scanner = reader.getScanner(INPUT_FILE_BUFFER_SIZE);
        IPartitioner<?> partitioner = DatabaseDescriptor.getPartitioner();    
        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) throws IOException
    {
        SSTableReader reader = SSTableReader.open(ssTableFile);
        export(reader, outs);
    }

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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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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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