Package org.apache.hadoop.hbase.client

Examples of org.apache.hadoop.hbase.client.Scanner

123
124
125
126
127
128
129
130
131
132
133
    try {
      verify(scanner);
    } finally {
      scanner.close();
    }
    Scanner scanner2 = table.getScanner(columns, startRow);
    try {
      for (RowResult r : scanner2) {
        assertTrue("row key", values.containsKey(r.getRow()));

        SortedMap<byte [], Cell> columnValues = values.get(r.getRow());
View Full Code Here
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
      // Delete again so we go get it all fresh.
      HConnectionManager.deleteConnectionInfo(conf, false);
      HTable t = new HTable(this.conf, TABLENAME);
      int count = 0;
      LOG.info("OPENING SCANNER");
      Scanner s = t.getScanner(TABLENAME_COLUMNS);
      try {
        for (RowResult r: s) {
          if (r == null || r.size() == 0) {
            break;
          }
          count++;
          if (count % 1000 == 0 && count > 0) {
            LOG.info("Iterated over " + count + " rows.");
          }
        }
        assertEquals(EXPECTED_COUNT, count);
      } finally {
        s.close();
      }
    } finally {
      HConnectionManager.deleteConnectionInfo(conf, false);
      cluster.shutdown();
    }
View Full Code Here
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
    HTable t = new HTable(conf, TABLE_NAME);
   
    // Case 1: scan with LATEST_TIMESTAMP. Should get two rows
   
    int count = 0;
    Scanner s = t.getScanner(HConstants.COLUMN_FAMILY_ARRAY);
    try {
      while (s.next() != null) {
        count += 1;
      }
      assertEquals("Number of rows should be 2", 2, count);
    } finally {
      s.close();
    }

    // Case 2: Scan with a timestamp greater than most recent timestamp
    // (in this case > 1000 and < LATEST_TIMESTAMP. Should get 2 rows.
   
    count = 0;
    s = t.getScanner(HConstants.COLUMN_FAMILY_ARRAY, HConstants.EMPTY_START_ROW,
        10000L);
    try {
      while (s.next() != null) {
        count += 1;
      }
      assertEquals("Number of rows should be 2", 2, count);
    } finally {
      s.close();
    }
   
    // Case 3: scan with timestamp equal to most recent timestamp
    // (in this case == 1000. Should get 2 rows.
   
    count = 0;
    s = t.getScanner(HConstants.COLUMN_FAMILY_ARRAY, HConstants.EMPTY_START_ROW,
        1000L);
    try {
      while (s.next() != null) {
        count += 1;
      }
      assertEquals("Number of rows should be 2", 2, count);
    } finally {
      s.close();
    }
   
    // Case 4: scan with timestamp greater than first timestamp but less than
    // second timestamp (100 < timestamp < 1000). Should get 2 rows.
   
    count = 0;
    s = t.getScanner(HConstants.COLUMN_FAMILY_ARRAY, HConstants.EMPTY_START_ROW,
        500L);
    try {
      while (s.next() != null) {
        count += 1;
      }
      assertEquals("Number of rows should be 2", 2, count);
    } finally {
      s.close();
    }
   
    // Case 5: scan with timestamp equal to first timestamp (100)
    // Should get 2 rows.
   
    count = 0;
    s = t.getScanner(HConstants.COLUMN_FAMILY_ARRAY, HConstants.EMPTY_START_ROW,
        100L);
    try {
      while (s.next() != null) {
        count += 1;
      }
      assertEquals("Number of rows should be 2", 2, count);
    } finally {
      s.close();
    }
  }
View Full Code Here
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
    byte [][] cols = new byte [][] {Bytes.toBytes(ANCHORNUM + "[0-9]+"),
      CONTENTS_BASIC};
   
    long startTime = System.currentTimeMillis();
   
    Scanner s = table.getScanner(cols, HConstants.EMPTY_BYTE_ARRAY);
    try {

      int contentsFetched = 0;
      int anchorFetched = 0;
      int k = 0;
      for (RowResult curVals : s) {
        for (Iterator<byte []> it = curVals.keySet().iterator(); it.hasNext(); ) {
          byte [] col = it.next();
          byte val[] = curVals.get(col).getValue();
          String curval = Bytes.toString(val);
          if (Bytes.compareTo(col, CONTENTS_BASIC) == 0) {
            assertTrue("Error at:" + curVals.getRow()
                + ", Value for " + col + " should start with: " + CONTENTSTR
                + ", but was fetched as: " + curval,
                curval.startsWith(CONTENTSTR));
            contentsFetched++;
           
          } else if (Bytes.toString(col).startsWith(ANCHORNUM)) {
            assertTrue("Error at:" + curVals.getRow()
                + ", Value for " + col + " should start with: " + ANCHORSTR
                + ", but was fetched as: " + curval,
                curval.startsWith(ANCHORSTR));
            anchorFetched++;
           
          } else {
            LOG.info(Bytes.toString(col));
          }
        }
        k++;
      }
      assertEquals("Expected " + NUM_VALS + " " +
        Bytes.toString(CONTENTS_BASIC) + " values, but fetched " +
        contentsFetched,
        NUM_VALS, contentsFetched);
      assertEquals("Expected " + NUM_VALS + " " + ANCHORNUM +
        " values, but fetched " + anchorFetched,
        NUM_VALS, anchorFetched);

      LOG.info("Scanned " + NUM_VALS
          + " rows. Elapsed time: "
          + ((System.currentTimeMillis() - startTime) / 1000.0));

    } finally {
      s.close();
    }
  }
View Full Code Here
486
487
488
489
490
491
492
493
494
495
496
497
      }
    }
    public void scannerClose(int id) throws IOError, IllegalArgument {
      LOG.debug("scannerClose: id=" + id);
      Scanner scanner = getScanner(id);
      if (scanner == null) {
        throw new IllegalArgument("scanner ID is invalid");
      }
      scanner.close();
      removeScanner(id);
    }
View Full Code Here
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
    }
   
    public TRowResult scannerGet(int id) throws IllegalArgument, NotFound,
        IOError {
      LOG.debug("scannerGet: id=" + id);
      Scanner scanner = getScanner(id);
      if (scanner == null) {
        throw new IllegalArgument("scanner ID is invalid");
      }
     
      RowResult results = null;
     
      try {
        results = scanner.next();
        if (results == null) {
          throw new NotFound("end of scanner reached");
        }
      } catch (IOException e) {
        throw new IOError(e.getMessage());
View Full Code Here
527
528
529
530
531
532
533
534
535
536
537
        HTable table = getTable(tableName);
        byte [][] columnsText = new byte[columns.size()][];
        for (int i = 0; i < columns.size(); ++i) {
          columnsText[i] = getText(columns.get(i));
        }
        Scanner scanner = table.getScanner(columnsText,
            getText(startRow));
        return addScanner(scanner);
      } catch (IOException e) {
        throw new IOError(e.getMessage());
      }
View Full Code Here
548
549
550
551
552
553
554
555
556
557
558
        HTable table = getTable(tableName);
        byte [][] columnsText = new byte[columns.size()][];
        for (int i = 0; i < columns.size(); ++i) {
          columnsText[i] = getText(columns.get(i));
        }
        Scanner scanner = table.getScanner(columnsText,
            getText(startRow), getText(stopRow));
        return addScanner(scanner);
      } catch (IOException e) {
        throw new IOError(e.getMessage());
      }
View Full Code Here
569
570
571
572
573
574
575
576
577
578
579
        HTable table = getTable(tableName);
        byte [][] columnsText = new byte[columns.size()][];
        for (int i = 0; i < columns.size(); ++i) {
          columnsText[i] = getText(columns.get(i));
        }
        Scanner scanner = table.getScanner(columnsText,
            getText(startRow), timestamp);
        return addScanner(scanner);
      } catch (IOException e) {
        throw new IOError(e.getMessage());
      }
View Full Code Here
591
592
593
594
595
596
597
598
599
600
601
        HTable table = getTable(tableName);
        byte [][] columnsText = new byte[columns.size()][];
        for (int i = 0; i < columns.size(); ++i) {
          columnsText[i] = getText(columns.get(i));
        }
        Scanner scanner = table.getScanner(columnsText,
            getText(startRow), getText(stopRow), timestamp);
        return addScanner(scanner);
      } catch (IOException e) {
        throw new IOError(e.getMessage());
      }
View Full Code Here
TOP

Related Classes of org.apache.hadoop.hbase.client.Scanner

  • org.apache.hadoop.hbase.client.tableindexed.IndexedTable
  • org.apache.hadoop.hbase.client.tableindexed.TestIndexedTable
  • org.apache.hadoop.hbase.filter.TestRowFilterAfterWrite
  • org.apache.hadoop.hbase.filter.TestRowFilterOnMultipleFamilies
  • org.apache.hadoop.hbase.mapred.TestTableIndex
  • org.apache.hadoop.hbase.mapred.TestTableMapReduce
  • org.apache.hadoop.hbase.regionserver.DisabledTestRegionServerExit
  • org.apache.hadoop.hbase.regionserver.transactional.DisabledTestHLogRecovery
  • org.apache.hadoop.hbase.rest.ScannerHandler
  • org.apache.hadoop.hbase.TestEmptyMetaInfo
    • 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.