HorizonNet commented on a change in pull request #1731:
URL: https://github.com/apache/hbase/pull/1731#discussion_r427486487
##########
File path:
hbase-mapreduce/src/test/java/org/apache/hadoop/hbase/mapreduce/TestTableSnapshotInputFormat.java
##########
@@ -304,6 +304,56 @@ public void testWithMockedMapReduceWithNoStartRowStopRow()
throws Exception {
}
}
+ @Test
+ public void testScanLimit() throws Exception {
+ setupCluster();
+ final TableName tableName = TableName.valueOf(name.getMethodName());
+ final String snapshotName = tableName + "Snapshot";
+ Table table = null;
+ try {
+ if (UTIL.getAdmin().tableExists(tableName)) {
+ UTIL.deleteTable(tableName);
+ }
+
+ UTIL.createTable(tableName, FAMILIES, new byte[][] { bbb, yyy });
+
+ Admin admin = UTIL.getAdmin();
+
+ int regionNum = admin.getRegions(tableName).size();
+ // put some stuff in the table
+ table = UTIL.getConnection().getTable(tableName);
+ UTIL.loadTable(table, FAMILIES);
+
+ Path rootDir = CommonFSUtils.getRootDir(UTIL.getConfiguration());
+ FileSystem fs = rootDir.getFileSystem(UTIL.getConfiguration());
+
+ SnapshotTestingUtils.createSnapshotAndValidate(admin, tableName,
Arrays.asList(FAMILIES),
+ null, snapshotName, rootDir, fs, true);
+
+ Job job = new Job(UTIL.getConfiguration());
+ Path tmpTableDir = UTIL.getDataTestDirOnTestFS(snapshotName);
+ // limit the scan
+ Scan scan = new Scan().setLimit(10);
+ TableMapReduceUtil.addDependencyJarsForClasses(job.getConfiguration(),
+ TestTableSnapshotInputFormat.class);
+
+ TableMapReduceUtil.initTableSnapshotMapperJob(snapshotName, scan,
+ RowCounter.RowCounterMapper.class, NullWritable.class,
NullWritable.class, job, true,
+ tmpTableDir);
+ Assert.assertTrue(job.waitForCompletion(true));
+ Assert.assertEquals(10 * regionNum,
+
job.getCounters().findCounter(RowCounter.RowCounterMapper.Counters.ROWS).getValue());
+ } finally {
+ if (table != null) {
+ table.close();
+ }
+ UTIL.getAdmin().deleteSnapshot(snapshotName);
+ UTIL.deleteTable(tableName);
+ tearDownCluster();
+ }
+ }
+
+
Review comment:
NIT: Can you please remove this additional empty line?
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