Examples of org.apache.cassandra.io.sstable.Descriptor

org.apache.cassandra.io.sstable.Descriptor
A SSTable is described by the keyspace and column family it contains data for, a generation (where higher generations contain more recent data) and an alphabetic version string. A descriptor can be marked as temporary, which influences generated filenames.

        logger.debug("Removing compacted SSTable files from {} (see http://wiki.apache.org/cassandra/MemtableSSTable)", columnFamily);


        Directories directories = Directories.create(table, columnFamily);
        for (Map.Entry<Descriptor,Set<Component>> sstableFiles : directories.sstableLister().list().entrySet())
        {
            Descriptor desc = sstableFiles.getKey();
            Set<Component> components = sstableFiles.getValue();


            if (components.contains(Component.COMPACTED_MARKER) || desc.temporary)
            {
                try
                {
                    SSTable.delete(desc, components);
                }
                catch (IOException e)
                {
                    throw new IOError(e);
                }
                continue;
            }


            File dataFile = new File(desc.filenameFor(Component.DATA));
            if (components.contains(Component.DATA) && dataFile.length() > 0)
                // everything appears to be in order... moving on.
                continue;


            // missing the DATA file! all components are orphaned
            logger.warn("Removing orphans for {}: {}", desc, components);
            for (Component component : components)
            {
                try
                {
                    FileUtils.deleteWithConfirm(desc.filenameFor(component));
                }
                catch (IOException e)
                {
                    throw new IOError(e);
                }

View Full Code Here

        Set<SSTableReader> newSSTables = new HashSet<SSTableReader>();


        Directories.SSTableLister lister = directories.sstableLister().skipCompacted(true).skipTemporary(true);
        for (Map.Entry<Descriptor, Set<Component>> entry : lister.list().entrySet())
        {
            Descriptor descriptor = entry.getKey();


            if (currentDescriptors.contains(descriptor))
                continue; // old (initialized) SSTable found, skipping
            if (descriptor.temporary) // in the process of being written
                continue;


            if (!descriptor.isCompatible())
                throw new RuntimeException(String.format("Can't open incompatible SSTable! Current version %s, found file: %s",
                                                         Descriptor.CURRENT_VERSION,
                                                         descriptor));


            Descriptor newDescriptor = new Descriptor(descriptor.version,
                                                      descriptor.directory,
                                                      descriptor.ksname,
                                                      descriptor.cfname,
                                                      fileIndexGenerator.incrementAndGet(),
                                                      false);

View Full Code Here

        return getTempSSTablePath(location, version);
    }


    public String getTempSSTablePath(File directory, String version)
    {
        Descriptor desc = new Descriptor(version,
                                         directory,
                                         table.name,
                                         columnFamily,
                                         fileIndexGenerator.incrementAndGet(),
                                         true);
        return desc.filenameFor(Component.DATA);
    }

View Full Code Here

    private static List<PendingFile> createPendingFiles(Collection<SSTableReader> sstables, Collection<Range> ranges)
    {
        List<PendingFile> pending = new ArrayList<PendingFile>();
        for (SSTableReader sstable : sstables)
        {
            Descriptor desc = sstable.descriptor;
            List<Pair<Long,Long>> sections = sstable.getPositionsForRanges(ranges);
            if (sections.isEmpty())
                continue;
            pending.add(new PendingFile(sstable, desc, SSTable.COMPONENT_DATA, sections));
        }

View Full Code Here

        Directories directories = Directories.create(keyspace.getName(), columnFamily);
        Directories.SSTableLister lister = directories.sstableLister().includeBackups(true);
        List<Integer> generations = new ArrayList<Integer>();
        for (Map.Entry<Descriptor, Set<Component>> entry : lister.list().entrySet())
        {
            Descriptor desc = entry.getKey();
            generations.add(desc.generation);
            if (!desc.isCompatible())
                throw new RuntimeException(String.format("Can't open incompatible SSTable! Current version %s, found file: %s", Descriptor.Version.CURRENT, desc));
        }
        Collections.sort(generations);
        int value = (generations.size() > 0) ? (generations.get(generations.size() - 1)) : 0;

View Full Code Here

        logger.debug("Removing compacted SSTable files from {} (see http://wiki.apache.org/cassandra/MemtableSSTable)", columnFamily);


        Directories directories = Directories.create(keyspaceName, columnFamily);
        for (Map.Entry<Descriptor,Set<Component>> sstableFiles : directories.sstableLister().list().entrySet())
        {
            Descriptor desc = sstableFiles.getKey();
            Set<Component> components = sstableFiles.getValue();


            if (components.contains(Component.COMPACTED_MARKER) || desc.temporary)
            {
                SSTable.delete(desc, components);
                continue;
            }


            File dataFile = new File(desc.filenameFor(Component.DATA));
            if (components.contains(Component.DATA) && dataFile.length() > 0)
                // everything appears to be in order... moving on.
                continue;


            // missing the DATA file! all components are orphaned
            logger.warn("Removing orphans for {}: {}", desc, components);
            for (Component component : components)
            {
                FileUtils.deleteWithConfirm(desc.filenameFor(component));
            }
        }


        // cleanup incomplete saved caches
        Pattern tmpCacheFilePattern = Pattern.compile(keyspaceName + "-" + columnFamily + "-(Key|Row)Cache.*\\.tmp$");

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        // remove new sstables from compactions that didn't complete, and compute
        // set of ancestors that shouldn't exist anymore
        Set<Integer> completedAncestors = new HashSet<Integer>();
        for (Map.Entry<Descriptor, Set<Component>> sstableFiles : directories.sstableLister().list().entrySet())
        {
            Descriptor desc = sstableFiles.getKey();
            Set<Component> components = sstableFiles.getValue();


            Set<Integer> ancestors;
            try
            {
                ancestors = SSTableMetadata.serializer.deserialize(desc).right;
            }
            catch (IOException e)
            {
                throw new FSReadError(e, desc.filenameFor(Component.STATS));
            }


            if (!ancestors.isEmpty() && unfinishedGenerations.containsAll(ancestors))
            {
                SSTable.delete(desc, components);
            }
            else
            {
                completedAncestors.addAll(ancestors);
            }
        }


        // remove old sstables from compactions that did complete
        for (Map.Entry<Descriptor, Set<Component>> sstableFiles : directories.sstableLister().list().entrySet())
        {
            Descriptor desc = sstableFiles.getKey();
            Set<Component> components = sstableFiles.getValue();


            if (completedAncestors.contains(desc.generation))
                SSTable.delete(desc, components);
        }

View Full Code Here

        Set<SSTableReader> newSSTables = new HashSet<SSTableReader>();


        Directories.SSTableLister lister = directories.sstableLister().skipTemporary(true);
        for (Map.Entry<Descriptor, Set<Component>> entry : lister.list().entrySet())
        {
            Descriptor descriptor = entry.getKey();


            if (currentDescriptors.contains(descriptor))
                continue; // old (initialized) SSTable found, skipping
            if (descriptor.temporary) // in the process of being written
                continue;


            if (!descriptor.isCompatible())
                throw new RuntimeException(String.format("Can't open incompatible SSTable! Current version %s, found file: %s",
                                                         Descriptor.Version.CURRENT,
                                                         descriptor));


            // force foreign sstables to level 0
            try
            {
                if (new File(descriptor.filenameFor(Component.STATS)).exists())
                {
                    Pair<SSTableMetadata, Set<Integer>> oldMetadata = SSTableMetadata.serializer.deserialize(descriptor);
                    LeveledManifest.mutateLevel(oldMetadata, descriptor, descriptor.filenameFor(Component.STATS), 0);
                }
            }
            catch (IOException e)
            {
                SSTableReader.logOpenException(entry.getKey(), e);
                continue;
            }


            Descriptor newDescriptor = new Descriptor(descriptor.version,
                                                      descriptor.directory,
                                                      descriptor.ksname,
                                                      descriptor.cfname,
                                                      fileIndexGenerator.incrementAndGet(),
                                                      false);

View Full Code Here

        return getTempSSTablePath(directory, Descriptor.Version.CURRENT);
    }


    private String getTempSSTablePath(File directory, Descriptor.Version version)
    {
        Descriptor desc = new Descriptor(version,
                                         directory,
                                         keyspace.getName(),
                                         name,
                                         fileIndexGenerator.incrementAndGet(),
                                         true);
        return desc.filenameFor(Component.DATA);
    }

View Full Code Here

        Directories directories = Directories.create(table.name, columnFamily);
        Directories.SSTableLister lister = directories.sstableLister().includeBackups(true);
        List<Integer> generations = new ArrayList<Integer>();
        for (Map.Entry<Descriptor, Set<Component>> entry : lister.list().entrySet())
        {
            Descriptor desc = entry.getKey();
            generations.add(desc.generation);
            if (!desc.isCompatible())
                throw new RuntimeException(String.format("Can't open incompatible SSTable! Current version %s, found file: %s", Descriptor.CURRENT_VERSION, desc));
        }
        Collections.sort(generations);
        int value = (generations.size() > 0) ? (generations.get(generations.size() - 1)) : 0;

View Full Code Here

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