Package org.apache.cassandra.db

Examples of org.apache.cassandra.db.ColumnFamilyStore

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    }

    /** load keyspace (table) definitions, but do not initialize the table instances. */
    public static void loadSchemas() throws IOException
    {
        ColumnFamilyStore schemaCFS = SystemTable.schemaCFS(SystemTable.SCHEMA_KEYSPACES_CF);

        // if table with definitions is empty try loading the old way
        if (schemaCFS.estimateKeys() == 0)
        {
            // we can load tables from local storage if a version is set in the system table and that actually maps to
            // real data in the definitions table.  If we do end up loading from xml, store the definitions so that we
            // don't load from xml anymore.
            UUID uuid = MigrationManager.getLastMigrationId();
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        /* Create a local sstable for each remote sstable */
        Descriptor remotedesc = remote.desc;

        // new local sstable
        Table table = Table.open(remotedesc.ksname);
        ColumnFamilyStore cfStore = table.getColumnFamilyStore(remotedesc.cfname);
        Descriptor localdesc = Descriptor.fromFilename(cfStore.getFlushPath(remote.desc.version));

        return new PendingFile(localdesc, remote);
     }
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    }

    /* usually used to populate the cache */
    protected void readData(String keyspace, String columnFamily, int offset, int numberOfRows) throws IOException
    {
        ColumnFamilyStore store = Table.open(keyspace).getColumnFamilyStore(columnFamily);
        for (int i = offset; i < offset + numberOfRows; i++)
        {
            DecoratedKey key = Util.dk("key" + i);
            QueryPath path = new QueryPath(columnFamily, null, ByteBufferUtil.bytes("col" + i));

            store.getColumnFamily(key, path, ByteBufferUtil.EMPTY_BYTE_BUFFER, ByteBufferUtil.EMPTY_BYTE_BUFFER, false, 1);
        }
    }
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    public void cleanup()
    {
        Table table = Table.open("Table1");
        for (String cfName : table.getColumnFamilies())
        {
            ColumnFamilyStore cfs = table.getColumnFamilyStore(cfName);
            try
            {
                cfs.reset();
            }
            catch (Exception e)
            {
                throw new RuntimeException(e);
            }
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                String tableName;
                String[] pieces = FBUtilities.strip(distinctEntry, "-");
                tableName = pieces[0];
                Table table = Table.open( tableName );

                ColumnFamilyStore cfStore = table.getColumnFamilyStore(pieces[1]);
                if (logger.isDebugEnabled())
                  logger.debug("Generating file name for " + distinctEntry + " ...");
                fileNames.put(distinctEntry, cfStore.getTempSSTableFileName());
            }

            return fileNames;
        }
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                throw new IllegalArgumentException(String.format("Unknown keyspace/columnFamily %s.%s",
                                                                 options.keyspace,
                                                                 options.cf));

            Table table = Table.openWithoutSSTables(options.keyspace);
            ColumnFamilyStore cfs = table.getColumnFamilyStore(options.cf);

            OutputHandler handler = new OutputHandler.SystemOutput(false, options.debug);
            Directories.SSTableLister lister = cfs.directories.sstableLister();
            if (options.snapshot != null)
                lister.onlyBackups(true).snapshots(options.snapshot);
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                                                                 options.tableName,
                                                                 options.cfName));

            // Do not load sstables since they might be broken
            Table table = Table.openWithoutSSTables(options.tableName);
            ColumnFamilyStore cfs = table.getColumnFamilyStore(options.cfName);
            String snapshotName = "pre-scrub-" + System.currentTimeMillis();

            OutputHandler handler = new OutputHandler.SystemOutput(options.verbose, options.debug);
            Directories.SSTableLister lister = cfs.directories.sstableLister().skipTemporary(true);

            List<SSTableReader> sstables = new ArrayList<SSTableReader>();

            // Scrub sstables
            for (Map.Entry<Descriptor, Set<Component>> entry : lister.list().entrySet())
            {
                Set<Component> components = entry.getValue();
                if (!components.contains(Component.DATA) || !components.contains(Component.PRIMARY_INDEX))
                    continue;

                try
                {
                    SSTableReader sstable = SSTableReader.openNoValidation(entry.getKey(), components, cfs.metadata);
                    sstables.add(sstable);

                    File snapshotDirectory = Directories.getSnapshotDirectory(sstable.descriptor, snapshotName);
                    sstable.createLinks(snapshotDirectory.getPath());

                }
                catch (Exception e)
                {
                    System.err.println(String.format("Error Loading %s: %s", entry.getKey(), e.getMessage()));
                    if (options.debug)
                        e.printStackTrace(System.err);
                }
            }
            System.out.println(String.format("Pre-scrub sstables snapshotted into snapshot %s", snapshotName));

            // If leveled, load the manifest
            LeveledManifest manifest = null;
            if (cfs.directories.tryGetLeveledManifest() != null)
            {
                cfs.directories.snapshotLeveledManifest(snapshotName);
                System.out.println(String.format("Leveled manifest snapshotted into snapshot %s", snapshotName));

                int maxSizeInMB = (int)((cfs.getCompactionStrategy().getMaxSSTableSize()) / (1024L * 1024L));
                manifest = LeveledManifest.create(cfs, maxSizeInMB, sstables);
            }

            if (!options.manifestCheckOnly)
            {
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    }

    /** load keyspace (table) definitions, but do not initialize the table instances. */
    public static void loadSchemas() throws IOException
    {
        ColumnFamilyStore schemaCFS = SystemTable.schemaCFS(SystemTable.SCHEMA_KEYSPACES_CF);

        // if table with definitions is empty try loading the old way
        if (schemaCFS.estimateKeys() == 0)
        {
            // we can load tables from local storage if a version is set in the system table and that actually maps to
            // real data in the definitions table.  If we do end up loading from xml, store the definitions so that we
            // don't load from xml anymore.
            UUID uuid = MigrationManager.getLastMigrationId();
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        if (oldestSegment != null)
        {
            for (Integer dirtyCFId : oldestSegment.getDirtyCFIDs())
            {
                String keypace = Schema.instance.getCF(dirtyCFId).left;
                final ColumnFamilyStore cfs = Table.open(keypace).getColumnFamilyStore(dirtyCFId);
                // flush shouldn't run on the commitlog executor, since it acquires Table.switchLock,
                // which may already be held by a thread waiting for the CL executor (via getContext),
                // causing deadlock
                Runnable runnable = new Runnable()
                {
                    public void run()
                    {
                        cfs.forceFlush();
                    }
                };
                StorageService.optionalTasks.execute(runnable);
            }
        }
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    }

    /** load keyspace (table) definitions, but do not initialize the table instances. */
    public static void loadSchemas() throws IOException
    {
        ColumnFamilyStore schemaCFS = SystemTable.schemaCFS(SystemTable.SCHEMA_KEYSPACES_CF);

        // if table with definitions is empty try loading the old way
        if (schemaCFS.estimateKeys() == 0)
        {
            // we can load tables from local storage if a version is set in the system table and that actually maps to
            // real data in the definitions table.  If we do end up loading from xml, store the definitions so that we
            // don't load from xml anymore.
            UUID uuid = MigrationManager.getLastMigrationId();
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Related Classes of org.apache.cassandra.db.ColumnFamilyStore

  • org.apache.cassandra.cache.IRowCacheEntry
  • org.apache.cassandra.cache.RowCacheKey
  • org.apache.cassandra.cache.RowCacheSentinel
  • org.apache.cassandra.config.CFMetaData
  • org.apache.cassandra.config.CFMetaData.Caching
  • org.apache.cassandra.config.CFMetaData.SpeculativeRetry
  • org.apache.cassandra.config.ColumnDefinition
  • org.apache.cassandra.config.DatabaseDescriptor
  • org.apache.cassandra.cql3.SSTableMetadataTrackingTest
  • org.apache.cassandra.db.columniterator.IColumnIterator
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