Package org.apache.tajo.storage

Examples of org.apache.tajo.storage.Scanner

53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
  }

  @Override
  public Scanner getScanner(TableMeta meta, Fragment fragment,
                            Schema target) throws IOException {
    Scanner scanner;

    Class<? extends Scanner> scannerClass;

    String handlerName = meta.getStoreType().name().toLowerCase();
    String handlerNameKey = handlerName + "_v2";

    scannerClass = SCANNER_HANDLER_CACHE.get(handlerNameKey);
    if (scannerClass == null) {
      scannerClass = conf.getClass(
          String.format("tajo.storage.scanner-handler.v2.%s.class",
              meta.getStoreType().name().toLowerCase()), null,
          Scanner.class);
      SCANNER_HANDLER_CACHE.put(handlerNameKey, scannerClass);
    }

    if (scannerClass == null) {
      throw new IOException("Unknown Storage Type: " + meta.getStoreType());
    }

    scanner = newScannerInstance(scannerClass, conf, meta, fragment);
    if (scanner.isProjectable()) {
      scanner.setTarget(target.toArray());
    }

    if(scanner instanceof FileScannerV2) {
      ((FileScannerV2)scanner).setStorageManagerContext(context);
    }
View Full Code Here
197
198
199
200
201
202
203
204
205
206
207
      scanner.init();
    }
  }

  private void openCacheScanner() throws IOException {
    Scanner cacheScanner = TupleCache.getInstance().openCacheScanner(cacheKey, plan.getPhysicalSchema());
    if (cacheScanner != null) {
      scanner = cacheScanner;
      cacheRead = true;
    }
  }
View Full Code Here
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
      final Path outputPath = getChunkPathForWrite(level + 1, nextRunId);
      info(LOG, mergeFanout + " files are being merged to an output file " + outputPath.getName());
      long mergeStartTime = System.currentTimeMillis();
      final RawFileAppender output = new RawFileAppender(context.getConf(), inSchema, meta, outputPath);
      output.init();
      final Scanner merger = createKWayMerger(inputFiles, startIdx, mergeFanout);
      merger.init();
      Tuple mergeTuple;
      while((mergeTuple = merger.next()) != null) {
        output.addTuple(mergeTuple);
      }
      merger.close();
      output.close();
      long mergeEndTime = System.currentTimeMillis();
      info(LOG, outputPath.getName() + " is written to a disk. ("
          + FileUtil.humanReadableByteCount(output.getOffset(), false)
          + " bytes, " + (mergeEndTime - mergeStartTime) + " msec)");
View Full Code Here
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
    assertFalse(tupleCache.lockBroadcastScan(cacheKey));

    tupleCache.addBroadcastCache(cacheKey, tupleData);
    assertTrue(tupleCache.isBroadcastCacheReady(cacheKey));

    Scanner scanner = tupleCache.openCacheScanner(cacheKey, null);
    assertNotNull(scanner);

    int count = 0;

    while (true) {
      Tuple tuple = scanner.next();
      if (tuple == null) {
        break;
      }

      assertEquals(tupleData.get(count), tuple);
View Full Code Here
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
    return scannerClass;
  }

  @Override
  public Scanner getScanner(TableMeta meta, Schema schema, Fragment fragment, Schema target) throws IOException {
    Scanner scanner;

    Class<? extends Scanner> scannerClass = getScannerClass(meta.getStoreType());
    if (scannerClass == null) {
      throw new IOException("Unknown Storage Type: " + meta.getStoreType());
    }

    scanner = newScannerInstance(scannerClass, conf, schema, meta, fragment);
    if (scanner.isProjectable()) {
      scanner.setTarget(target.toArray());
    }

    if(scanner instanceof FileScannerV2) {
      ((FileScannerV2)scanner).setStorageManagerContext(context);
    }
View Full Code Here
TOP

Related Classes of org.apache.tajo.storage.Scanner

  • org.apache.tajo.engine.planner.physical.ExternalSortExec$KWayMergerCaller
  • org.apache.tajo.engine.planner.physical.SeqScanExec
  • org.apache.tajo.engine.util.TestTupleCache
  • org.apache.tajo.storage.v2.StorageManagerV2
    • Copyright © 2018 www.massapicom. All rights reserved.
    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.