use of org.apache.drill.exec.physical.impl.scan.v3.ManagedReader in project drill by apache.
the class TestFileScanLifecycle method testAllColumns.
@Test
public void testAllColumns() {
FileScanLifecycleBuilder builder = new FileScanLifecycleBuilder();
builder.rootDir(MOCK_ROOT_PATH);
builder.maxPartitionDepth(3);
builder.projection(FileScanUtils.projectAllWithMetadata(3));
builder.fileSplits(Collections.singletonList(new DummyFileWork(MOCK_FILE_PATH)));
builder.useLegacyWildcardExpansion(true);
builder.readerFactory(new FileReaderFactory() {
@Override
public ManagedReader newReader(FileSchemaNegotiator negotiator) {
return new MockEarlySchemaReader(negotiator, 1);
}
});
ScanLifecycle scan = buildScan(builder);
assertSame(ProjectionType.ALL, scan.schemaTracker().projectionType());
RowBatchReader reader = scan.nextReader();
assertTrue(reader.open());
assertTrue(reader.next());
TupleMetadata expectedSchema = new SchemaBuilder().addAll(SCHEMA).add(FileScanUtils.FULLY_QUALIFIED_NAME_COL, IMPLICIT_COL_TYPE).add(FileScanUtils.FILE_PATH_COL, IMPLICIT_COL_TYPE).add(FileScanUtils.FILE_NAME_COL, IMPLICIT_COL_TYPE).add(FileScanUtils.SUFFIX_COL, IMPLICIT_COL_TYPE).add(FileScanUtils.partitionColName(0), PARTITION_COL_TYPE).add(FileScanUtils.partitionColName(1), PARTITION_COL_TYPE).add(FileScanUtils.partitionColName(2), PARTITION_COL_TYPE).build();
RowSet expected = fixture.rowSetBuilder(expectedSchema).addRow(10, "fred", MOCK_FILE_FQN, MOCK_FILE_DIR_PATH, MOCK_FILE_NAME, MOCK_SUFFIX, MOCK_DIR0, MOCK_DIR1, null).addRow(20, "wilma", MOCK_FILE_FQN, MOCK_FILE_DIR_PATH, MOCK_FILE_NAME, MOCK_SUFFIX, MOCK_DIR0, MOCK_DIR1, null).build();
RowSetUtilities.verify(expected, fixture.wrap(reader.output()));
assertFalse(reader.next());
reader.close();
scan.close();
}
use of org.apache.drill.exec.physical.impl.scan.v3.ManagedReader in project drill by apache.
the class TestScanLifecycleTwoReaders method testTwoNullReaders.
/**
* Two null readers: neither provides a valid scan schema.
*/
@Test
public void testTwoNullReaders() {
ScanLifecycleBuilder builder = new ScanLifecycleBuilder();
builder.readerFactory(new TwoReaderFactory() {
@Override
public ManagedReader firstReader(SchemaNegotiator negotiator) {
return new MockLateSchemaReader(negotiator, 0);
}
@Override
public ManagedReader secondReader(SchemaNegotiator negotiator) {
return new MockLateSchemaReader(negotiator, 0);
}
});
ScanLifecycle scan = buildScan(builder);
verifyEmptyReader(scan);
verifyEmptyReader(scan);
scan.close();
}
use of org.apache.drill.exec.physical.impl.scan.v3.ManagedReader in project drill by apache.
the class TestScanLifecycleTwoReaders method testColumnReorderingBA.
/**
* {@code SELECT * FROM} (b,a) then (a, b). The order of the first
* table drives the order of the results.
*/
@Test
public void testColumnReorderingBA() {
ScanLifecycleBuilder builder = new ScanLifecycleBuilder();
builder.readerFactory(new TwoReaderFactory() {
@Override
public ManagedReader firstReader(SchemaNegotiator negotiator) {
return new MockReorderedReader(negotiator);
}
@Override
public ManagedReader secondReader(SchemaNegotiator negotiator) {
return new MockLateSchemaReader(negotiator, 1);
}
});
ScanLifecycle scan = buildScan(builder);
RowBatchReader reader = scan.nextReader();
reader = scan.nextReader();
assertTrue(reader.open());
assertTrue(reader.next());
RowSet expected = fixture.rowSetBuilder(MockReorderedReader.READER_SCHEMA).addRow("barney", 30).addRow("betty", 40).build();
RowSetUtilities.verify(expected, fixture.wrap(reader.output()));
assertFalse(reader.next());
reader.close();
reader = scan.nextReader();
reader = scan.nextReader();
assertTrue(reader.open());
assertTrue(reader.next());
expected = fixture.rowSetBuilder(MockReorderedReader.READER_SCHEMA).addRow("fred", 10).addRow("wilma", 20).build();
RowSetUtilities.verify(expected, fixture.wrap(reader.output()));
assertFalse(reader.next());
reader.close();
scan.close();
}
use of org.apache.drill.exec.physical.impl.scan.v3.ManagedReader in project drill by apache.
the class TestScanLifecycleBasics method testEarlySchemaWithProject.
/**
* Test SELECT a, c FROM table(a, b)
*/
@Test
public void testEarlySchemaWithProject() {
ScanLifecycleBuilder builder = new ScanLifecycleBuilder();
builder.projection(RowSetTestUtils.projectList("a", "c"));
builder.readerFactory(new SingleReaderFactory() {
@Override
public ManagedReader next(SchemaNegotiator negotiator) {
return new MockEarlySchemaReader(negotiator, 1);
}
});
ScanLifecycle scan = buildScan(builder);
assertSame(ProjectionType.SOME, scan.schemaTracker().projectionType());
RowBatchReader reader = scan.nextReader();
assertTrue(reader.open());
// Early schema: so output schema is available after open
TupleMetadata expectedSchema = new SchemaBuilder().add("a", MinorType.INT).addNullable("c", MinorType.INT).build();
assertEquals(expectedSchema, scan.outputSchema());
assertTrue(reader.next());
RowSet expected = fixture.rowSetBuilder(expectedSchema).addRow(10, null).addRow(20, null).build();
RowSetUtilities.verify(expected, fixture.wrap(reader.output()));
assertFalse(reader.next());
reader.close();
scan.close();
}
use of org.apache.drill.exec.physical.impl.scan.v3.ManagedReader in project drill by apache.
the class TestScanLifecycleBasics method testLateSchemaWithProject.
/**
* Test SELECT a, c FROM table(a, b)
* c will be null
*/
@Test
public void testLateSchemaWithProject() {
ScanLifecycleBuilder builder = new ScanLifecycleBuilder();
builder.projection(RowSetTestUtils.projectList("a", "c"));
builder.readerFactory(new SingleReaderFactory() {
@Override
public ManagedReader next(SchemaNegotiator negotiator) {
return new MockLateSchemaReader(negotiator, 1);
}
});
ScanLifecycle scan = buildScan(builder);
assertSame(ProjectionType.SOME, scan.schemaTracker().projectionType());
RowBatchReader reader = scan.nextReader();
assertTrue(reader.open());
assertTrue(reader.next());
// Late schema: so output schema is available after next()
TupleMetadata expectedSchema = new SchemaBuilder().add("a", MinorType.INT).addNullable("c", MinorType.INT).build();
assertEquals(expectedSchema, scan.outputSchema());
RowSet expected = fixture.rowSetBuilder(expectedSchema).addRow(10, null).addRow(20, null).build();
RowSetUtilities.verify(expected, fixture.wrap(reader.output()));
assertFalse(reader.next());
reader.close();
scan.close();
}
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