Java Code Examples for org.apache.flink.runtime.operators.testutils.PairGenerator.KeyMode#RANDOM
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org.apache.flink.runtime.operators.testutils.PairGenerator.KeyMode#RANDOM .
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Example 1
Source File: FileChannelStreamsITCase.java From Flink-CEPplus with Apache License 2.0 | 4 votes |
@Test public void testWriteReadSmallRecords() { try { List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 2
Source File: FileChannelStreamsITCase.java From Flink-CEPplus with Apache License 2.0 | 4 votes |
@Test public void testWriteAndReadLongRecords() { try { final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_LONG_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = this.ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_LONG; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_LONG; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 3
Source File: FileChannelStreamsITCase.java From Flink-CEPplus with Apache License 2.0 | 4 votes |
@Test public void testReadTooMany() { try { final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = this.ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them try { Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT + 1; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } fail("Expected an EOFException which did not occur."); } catch (EOFException eofex) { // expected } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 4
Source File: FileChannelStreamsITCase.java From Flink-CEPplus with Apache License 2.0 | 4 votes |
@Test public void testWriteReadOneBufferOnly() { try { final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), 1); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = this.ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), 1); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 5
Source File: FileChannelStreamsITCase.java From Flink-CEPplus with Apache License 2.0 | 4 votes |
@Test public void testWriteReadNotAll() { try { final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = this.ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT / 2; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 6
Source File: FileChannelStreamsITCase.java From flink with Apache License 2.0 | 4 votes |
@Test public void testWriteReadSmallRecords() { try { List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 7
Source File: FileChannelStreamsITCase.java From flink with Apache License 2.0 | 4 votes |
@Test public void testWriteAndReadLongRecords() { try { final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_LONG_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = this.ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_LONG; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_LONG; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 8
Source File: FileChannelStreamsITCase.java From flink with Apache License 2.0 | 4 votes |
@Test public void testReadTooMany() { try { final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = this.ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them try { Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT + 1; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } fail("Expected an EOFException which did not occur."); } catch (EOFException eofex) { // expected } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 9
Source File: FileChannelStreamsITCase.java From flink with Apache License 2.0 | 4 votes |
@Test public void testWriteReadOneBufferOnly() { try { final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), 1); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = this.ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), 1); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 10
Source File: FileChannelStreamsITCase.java From flink with Apache License 2.0 | 4 votes |
@Test public void testWriteReadNotAll() { try { final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = this.ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT / 2; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 11
Source File: FileChannelStreamsITCase.java From flink with Apache License 2.0 | 4 votes |
@Test public void testWriteReadSmallRecords() { try { List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 12
Source File: FileChannelStreamsITCase.java From flink with Apache License 2.0 | 4 votes |
@Test public void testWriteAndReadLongRecords() { try { final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_LONG_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = this.ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_LONG; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_LONG; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 13
Source File: FileChannelStreamsITCase.java From flink with Apache License 2.0 | 4 votes |
@Test public void testReadTooMany() { try { final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = this.ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them try { Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT + 1; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } fail("Expected an EOFException which did not occur."); } catch (EOFException eofex) { // expected } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 14
Source File: FileChannelStreamsITCase.java From flink with Apache License 2.0 | 4 votes |
@Test public void testWriteReadOneBufferOnly() { try { final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), 1); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = this.ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), 1); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }
Example 15
Source File: FileChannelStreamsITCase.java From flink with Apache License 2.0 | 4 votes |
@Test public void testWriteReadNotAll() { try { final List<MemorySegment> memory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final PairGenerator generator = new PairGenerator(SEED, KEY_MAX, VALUE_SHORT_LENGTH, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH); final FileIOChannel.ID channel = this.ioManager.createChannel(); // create the writer output view final BlockChannelWriter<MemorySegment> writer = this.ioManager.createBlockChannelWriter(channel); final FileChannelOutputView outView = new FileChannelOutputView(writer, memManager, memory, MEMORY_PAGE_SIZE); // write a number of pairs Pair pair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT; i++) { generator.next(pair); pair.write(outView); } outView.close(); // create the reader input view List<MemorySegment> readMemory = memManager.allocatePages(new DummyInvokable(), NUM_MEMORY_SEGMENTS); final BlockChannelReader<MemorySegment> reader = ioManager.createBlockChannelReader(channel); final FileChannelInputView inView = new FileChannelInputView(reader, memManager, readMemory, outView.getBytesInLatestSegment()); generator.reset(); // read and re-generate all records and compare them Pair readPair = new Pair(); for (int i = 0; i < NUM_PAIRS_SHORT / 2; i++) { generator.next(pair); readPair.read(inView); assertEquals("The re-generated and the read record do not match.", pair, readPair); } inView.close(); reader.deleteChannel(); } catch (Exception e) { e.printStackTrace(); fail(e.getMessage()); } }