Examples with DrillFileSystem org.apache.drill.exec.store.dfs.DrillFileSystem used on opensource projects

Example 6 with DrillFileSystem

use of org.apache.drill.exec.store.dfs.DrillFileSystem in project drill by apache.

the class LocalPersistentStore method getFileSystem.

public static DrillFileSystem getFileSystem(DrillConfig config, Path root) throws IOException {
    Path blobRoot = root == null ? getLogDir() : root;
    Configuration fsConf = new Configuration();
    if (blobRoot.toUri().getScheme() != null) {
        fsConf.set(FileSystem.FS_DEFAULT_NAME_KEY, blobRoot.toUri().toString());
    }
    DrillFileSystem fs = new DrillFileSystem(fsConf);
    fs.mkdirs(blobRoot);
    return fs;
}

Example 7 with DrillFileSystem

use of org.apache.drill.exec.store.dfs.DrillFileSystem in project drill by apache.

the class EasyFormatPlugin method getReaderBatch.

@SuppressWarnings("resource")
CloseableRecordBatch getReaderBatch(FragmentContext context, EasySubScan scan) throws ExecutionSetupException {
    final ImplicitColumnExplorer columnExplorer = new ImplicitColumnExplorer(context, scan.getColumns());
    if (!columnExplorer.isStarQuery()) {
        scan = new EasySubScan(scan.getUserName(), scan.getWorkUnits(), scan.getFormatPlugin(), columnExplorer.getTableColumns(), scan.getSelectionRoot());
        scan.setOperatorId(scan.getOperatorId());
    }
    OperatorContext oContext = context.newOperatorContext(scan);
    final DrillFileSystem dfs;
    try {
        dfs = oContext.newFileSystem(fsConf);
    } catch (IOException e) {
        throw new ExecutionSetupException(String.format("Failed to create FileSystem: %s", e.getMessage()), e);
    }
    List<RecordReader> readers = Lists.newArrayList();
    List<Map<String, String>> implicitColumns = Lists.newArrayList();
    Map<String, String> mapWithMaxColumns = Maps.newLinkedHashMap();
    for (FileWork work : scan.getWorkUnits()) {
        RecordReader recordReader = getRecordReader(context, dfs, work, scan.getColumns(), scan.getUserName());
        readers.add(recordReader);
        Map<String, String> implicitValues = columnExplorer.populateImplicitColumns(work, scan.getSelectionRoot());
        implicitColumns.add(implicitValues);
        if (implicitValues.size() > mapWithMaxColumns.size()) {
            mapWithMaxColumns = implicitValues;
        }
    }
    // all readers should have the same number of implicit columns, add missing ones with value null
    Map<String, String> diff = Maps.transformValues(mapWithMaxColumns, Functions.constant((String) null));
    for (Map<String, String> map : implicitColumns) {
        map.putAll(Maps.difference(map, diff).entriesOnlyOnRight());
    }
    return new ScanBatch(scan, context, oContext, readers.iterator(), implicitColumns);
}

Example 8 with DrillFileSystem

use of org.apache.drill.exec.store.dfs.DrillFileSystem in project drill by apache.

the class RefreshMetadataHandler method getPlan.

@Override
public PhysicalPlan getPlan(SqlNode sqlNode) throws ValidationException, RelConversionException, IOException, ForemanSetupException {
    final SqlRefreshMetadata refreshTable = unwrap(sqlNode, SqlRefreshMetadata.class);
    try {
        final SchemaPlus schema = findSchema(config.getConverter().getDefaultSchema(), refreshTable.getSchemaPath());
        if (schema == null) {
            return direct(false, "Storage plugin or workspace does not exist [%s]", SchemaUtilites.SCHEMA_PATH_JOINER.join(refreshTable.getSchemaPath()));
        }
        final String tableName = refreshTable.getName();
        if (tableName.contains("*") || tableName.contains("?")) {
            return direct(false, "Glob path %s not supported for metadata refresh", tableName);
        }
        final Table table = schema.getTable(tableName);
        if (table == null) {
            return direct(false, "Table %s does not exist.", tableName);
        }
        if (!(table instanceof DrillTable)) {
            return notSupported(tableName);
        }
        final DrillTable drillTable = (DrillTable) table;
        final Object selection = drillTable.getSelection();
        if (!(selection instanceof FormatSelection)) {
            return notSupported(tableName);
        }
        FormatSelection formatSelection = (FormatSelection) selection;
        FormatPluginConfig formatConfig = formatSelection.getFormat();
        if (!((formatConfig instanceof ParquetFormatConfig) || ((formatConfig instanceof NamedFormatPluginConfig) && ((NamedFormatPluginConfig) formatConfig).name.equals("parquet")))) {
            return notSupported(tableName);
        }
        FileSystemPlugin plugin = (FileSystemPlugin) drillTable.getPlugin();
        DrillFileSystem fs = new DrillFileSystem(plugin.getFormatPlugin(formatSelection.getFormat()).getFsConf());
        String selectionRoot = formatSelection.getSelection().selectionRoot;
        if (!fs.getFileStatus(new Path(selectionRoot)).isDirectory()) {
            return notSupported(tableName);
        }
        if (!(formatConfig instanceof ParquetFormatConfig)) {
            formatConfig = new ParquetFormatConfig();
        }
        Metadata.createMeta(fs, selectionRoot, (ParquetFormatConfig) formatConfig);
        return direct(true, "Successfully updated metadata for table %s.", tableName);
    } catch (Exception e) {
        logger.error("Failed to update metadata for table '{}'", refreshTable.getName(), e);
        return DirectPlan.createDirectPlan(context, false, String.format("Error: %s", e.getMessage()));
    }
}

Example 9 with DrillFileSystem

use of org.apache.drill.exec.store.dfs.DrillFileSystem in project drill by apache.

the class ShowFileHandler method getPlan.

@Override
public PhysicalPlan getPlan(SqlNode sqlNode) throws ValidationException, RelConversionException, IOException {
    SqlIdentifier from = ((SqlShowFiles) sqlNode).getDb();
    DrillFileSystem fs = null;
    String defaultLocation = null;
    String fromDir = "./";
    SchemaPlus defaultSchema = config.getConverter().getDefaultSchema();
    SchemaPlus drillSchema = defaultSchema;
    // Show files can be used without from clause, in which case we display the files in the default schema
    if (from != null) {
        // We are not sure if the full from clause is just the schema or includes table name,
        // first try to see if the full path specified is a schema
        drillSchema = SchemaUtilites.findSchema(defaultSchema, from.names);
        if (drillSchema == null) {
            // Entire from clause is not a schema, try to obtain the schema without the last part of the specified clause.
            drillSchema = SchemaUtilites.findSchema(defaultSchema, from.names.subList(0, from.names.size() - 1));
            fromDir = fromDir + from.names.get((from.names.size() - 1));
        }
        if (drillSchema == null) {
            throw UserException.validationError().message("Invalid FROM/IN clause [%s]", from.toString()).build(logger);
        }
    }
    WorkspaceSchema wsSchema;
    try {
        wsSchema = (WorkspaceSchema) drillSchema.unwrap(AbstractSchema.class).getDefaultSchema();
    } catch (ClassCastException e) {
        throw UserException.validationError().message("SHOW FILES is supported in workspace type schema only. Schema [%s] is not a workspace schema.", SchemaUtilites.getSchemaPath(drillSchema)).build(logger);
    }
    // Get the file system object
    fs = wsSchema.getFS();
    // Get the default path
    defaultLocation = wsSchema.getDefaultLocation();
    List<ShowFilesCommandResult> rows = new ArrayList<>();
    for (FileStatus fileStatus : fs.list(false, new Path(defaultLocation, fromDir))) {
        ShowFilesCommandResult result = new ShowFilesCommandResult(fileStatus.getPath().getName(), fileStatus.isDir(), !fileStatus.isDir(), fileStatus.getLen(), fileStatus.getOwner(), fileStatus.getGroup(), fileStatus.getPermission().toString(), fileStatus.getAccessTime(), fileStatus.getModificationTime());
        rows.add(result);
    }
    return DirectPlan.createDirectPlan(context.getCurrentEndpoint(), rows.iterator(), ShowFilesCommandResult.class);
}

Example 10 with DrillFileSystem

use of org.apache.drill.exec.store.dfs.DrillFileSystem in project drill by apache.

the class TestMiniPlan method initFS.

@BeforeClass
public static void initFS() throws Exception {
    Configuration conf = new Configuration();
    conf.set(FileSystem.FS_DEFAULT_NAME_KEY, FileSystem.DEFAULT_FS);
    fs = new DrillFileSystem(conf);
}