Examples with DataSetException io.cdap.cdap.api.dataset.DataSetException used on opensource projects

Example 36 with DataSetException

use of io.cdap.cdap.api.dataset.DataSetException in project cdap by caskdata.

the class PartitionRollbackTestRun method testPFSRollback.

/*
   * This tests all the following cases:
   *
   *  1. addPartition(location) fails because partition already exists
   *  2. addPartition(location) fails because Hive partition already exists
   *  3. addPartition(location) succeeds but transaction fails
   *  4. getPartitionOutput() fails because partition already exists
   *  5. partitionOutput.addPartition() fails because Hive partition already exists
   *  6. partitionOutput.addPartition() succeeds but transaction fails
   *  7. mapreduce writing partition fails because location already exists
   *  8. mapreduce writing partition fails because partition already exists
   *  9. mapreduce writing partition fails because Hive partition already exists
   *  10. mapreduce writing dynamic partition fails because location already exists
   *  11. mapreduce writing dynamic partition fails because partition already exists
   *  12. mapreduce writing dynamic partition fails because Hive partition already exists
   *  13. multi-output mapreduce writing partition fails because location already exists
   *  13a. first output fails, other output must rollback 0 and 5
   *  13b. second output fails, first output must rollback 0 and 5
   *  14. multi-output mapreduce writing partition fails because partition already exists
   *  14a. first output fails, other output must rollback partition 5
   *  14b. second output fails, first output must rollback partition 5
   *  15. multi-output mapreduce writing partition fails because Hive partition already exists
   *  15a. first output fails, other output must rollback partitions 0 and 5
   *  15b. second output fails, first output must rollback partitions 0 and 5
   *
   * For all these cases, we validate that existing files and partitions are preserved, and newly
   * added files and partitions are rolled back.
   */
@Test
public void testPFSRollback() throws Exception {
    ApplicationManager appManager = deployApplication(AppWritingToPartitioned.class);
    MapReduceManager mrManager = appManager.getMapReduceManager(MAPREDUCE);
    int numRuns = 0;
    Validator pfsValidator = new Validator(PFS);
    Validator otherValidator = new Validator(OTHER);
    final UnitTestManager.UnitTestDatasetManager<PartitionedFileSet> pfsManager = pfsValidator.getPfsManager();
    final PartitionedFileSet pfs = pfsManager.get();
    final PartitionedFileSet other = otherValidator.getPfsManager().get();
    final String path3 = pfsValidator.getRelativePath3();
    // 1. addPartition(location) fails because partition already exists
    try {
        pfsManager.execute(new Runnable() {

            @Override
            public void run() {
                pfs.addPartition(KEY_1, path3);
            }
        });
        Assert.fail("Expected tx to fail because partition for number=1 already exists");
    } catch (TransactionFailureException e) {
    // expected
    }
    pfsValidator.validate();
    // 2. addPartition(location) fails because Hive partition already exists
    try {
        pfsManager.execute(new Runnable() {

            @Override
            public void run() {
                pfs.addPartition(KEY_4, path3);
            }
        });
        Assert.fail("Expected tx to fail because hive partition for number=1 already exists");
    } catch (TransactionFailureException e) {
    // expected
    }
    pfsValidator.validate();
    // 3. addPartition(location) succeeds but transaction fails
    try {
        pfsManager.execute(new Runnable() {

            @Override
            public void run() {
                pfs.addPartition(KEY_3, path3);
                throw new RuntimeException("fail the tx");
            }
        });
        Assert.fail("Expected tx to fail because it threw a runtime exception");
    } catch (TransactionFailureException e) {
    // expected
    }
    pfsValidator.validate();
    // 4. partitionOutput.getPartitionOutput() fails because partition already exists
    try {
        pfs.getPartitionOutput(KEY_1);
        Assert.fail("Expected getPartitionOutput to fail, because the partition already exists.");
    } catch (DataSetException expected) {
    }
    pfsValidator.validate();
    // 5. partitionOutput.addPartition() fails because Hive partition already exists
    final PartitionOutput output4x = pfs.getPartitionOutput(KEY_4);
    final Location location4x = output4x.getLocation();
    try (Writer writer = new OutputStreamWriter(location4x.append("file").getOutputStream())) {
        writer.write("4x,4x\n");
    }
    try {
        pfsManager.execute(new Runnable() {

            @Override
            public void run() {
                output4x.addPartition();
            }
        });
        Assert.fail("Expected tx to fail because hive partition for number=4 already exists");
    } catch (TransactionFailureException e) {
    // expected
    }
    pfsValidator.validate();
    Assert.assertFalse(location4x.exists());
    // 6. partitionOutput.addPartition() succeeds but transaction fails
    final PartitionOutput output5x = pfs.getPartitionOutput(KEY_5);
    final Location location5x = output5x.getLocation();
    try (Writer writer = new OutputStreamWriter(location5x.append("file").getOutputStream())) {
        writer.write("5x,5x\n");
    }
    try {
        pfsManager.execute(new Runnable() {

            @Override
            public void run() {
                output5x.addPartition();
                throw new RuntimeException("fail the tx");
            }
        });
        Assert.fail("Expected tx to fail because it threw a runtime exception");
    } catch (TransactionFailureException e) {
    // expected
    }
    pfsValidator.validate();
    Assert.assertFalse(location5x.exists());
    // 7. mapreduce writing partition fails because location already exists
    mrManager.start(ImmutableMap.of(PFS_OUT, "1", "input.text", "1x"));
    mrManager.waitForRuns(ProgramRunStatus.FAILED, ++numRuns, 2, TimeUnit.MINUTES);
    pfsValidator.validate();
    // 8. mapreduce writing partition fails because partition already exists
    mrManager.start(ImmutableMap.of(PFS_OUT, "2", "input.text", "2x"));
    mrManager.waitForRuns(ProgramRunStatus.FAILED, ++numRuns, 2, TimeUnit.MINUTES);
    pfsValidator.validate();
    Assert.assertFalse(pfs.getPartitionOutput(KEY_2).getLocation().exists());
    // 9. mapreduce writing partition fails because Hive partition already exists
    mrManager.start(ImmutableMap.of(PFS_OUT, "4", "input.text", "4x"));
    mrManager.waitForRuns(ProgramRunStatus.FAILED, ++numRuns, 2, TimeUnit.MINUTES);
    pfsValidator.validate();
    Assert.assertFalse(pfs.getPartitionOutput(KEY_4).getLocation().exists());
    // 10. mapreduce writing dynamic partition fails because location already exists
    mrManager.start(ImmutableMap.of("input.text", "3x 5x"));
    mrManager.waitForRuns(ProgramRunStatus.FAILED, ++numRuns, 2, TimeUnit.MINUTES);
    pfsValidator.validate();
    Assert.assertFalse(pfs.getPartitionOutput(KEY_5).getLocation().exists());
    // 11. mapreduce writing dynamic partition fails because partition already exists
    mrManager.start(ImmutableMap.of("input.text", "2x 5x"));
    mrManager.waitForRuns(ProgramRunStatus.FAILED, ++numRuns, 2, TimeUnit.MINUTES);
    pfsValidator.validate();
    Assert.assertFalse(pfs.getPartitionOutput(KEY_2).getLocation().exists());
    Assert.assertFalse(pfs.getPartitionOutput(KEY_5).getLocation().exists());
    // 12. mapreduce writing dynamic partition fails because Hive partition already exists
    mrManager.start(ImmutableMap.of("input.text", "0x 4x 5x"));
    mrManager.waitForRuns(ProgramRunStatus.FAILED, ++numRuns, 2, TimeUnit.MINUTES);
    pfsValidator.validate();
    Assert.assertFalse(pfs.getPartitionOutput(KEY_0).getLocation().exists());
    Assert.assertFalse(pfs.getPartitionOutput(KEY_4).getLocation().exists());
    Assert.assertFalse(pfs.getPartitionOutput(KEY_5).getLocation().exists());
    // 13. multi-output mapreduce writing partition fails because location already exists
    // 13a. first output fails, other output must rollback 0 and 5
    mrManager.start(ImmutableMap.of("output.datasets", BOTH, PFS_OUT, "1", "input.text", "0x 5x"));
    mrManager.waitForRuns(ProgramRunStatus.FAILED, ++numRuns, 2, TimeUnit.MINUTES);
    pfsValidator.validate();
    otherValidator.validate();
    Assert.assertFalse(other.getPartitionOutput(KEY_0).getLocation().exists());
    Assert.assertFalse(other.getPartitionOutput(KEY_5).getLocation().exists());
    // 13b. second output fails, first output must rollback 0 and 5
    mrManager.start(ImmutableMap.of("output.datasets", BOTH, OTHER_OUT, "1", "input.text", "0x 5x"));
    mrManager.waitForRuns(ProgramRunStatus.FAILED, ++numRuns, 2, TimeUnit.MINUTES);
    pfsValidator.validate();
    otherValidator.validate();
    Assert.assertFalse(pfs.getPartitionOutput(KEY_0).getLocation().exists());
    Assert.assertFalse(pfs.getPartitionOutput(KEY_5).getLocation().exists());
    // 14. multi-output mapreduce writing partition fails because partition already exists
    // 14a. first output fails, other output must rollback partition 5
    mrManager.start(ImmutableMap.of("output.datasets", BOTH, PFS_OUT, "2", OTHER_OUT, "5", "input.text", "2x 5x"));
    mrManager.waitForRuns(ProgramRunStatus.FAILED, ++numRuns, 2, TimeUnit.MINUTES);
    pfsValidator.validate();
    otherValidator.validate();
    Assert.assertFalse(other.getPartitionOutput(KEY_5).getLocation().exists());
    // 14b. second output fails, first output must rollback partition 5
    mrManager.start(ImmutableMap.of("output.datasets", BOTH, PFS_OUT, "5", OTHER_OUT, "2", "input.text", "2x 5x"));
    mrManager.waitForRuns(ProgramRunStatus.FAILED, ++numRuns, 2, TimeUnit.MINUTES);
    pfsValidator.validate();
    otherValidator.validate();
    Assert.assertFalse(pfs.getPartitionOutput(KEY_5).getLocation().exists());
    // 15. multi-output mapreduce writing partition fails because Hive partition already exists
    // 15a. first output fails, other output must rollback partitions 0 and 5
    mrManager.start(ImmutableMap.of("output.datasets", BOTH, PFS_OUT, "4", "input.text", "0x 5x"));
    mrManager.waitForRuns(ProgramRunStatus.FAILED, ++numRuns, 2, TimeUnit.MINUTES);
    pfsValidator.validate();
    otherValidator.validate();
    Assert.assertFalse(pfs.getPartitionOutput(KEY_4).getLocation().exists());
    Assert.assertFalse(other.getPartitionOutput(KEY_0).getLocation().exists());
    Assert.assertFalse(other.getPartitionOutput(KEY_5).getLocation().exists());
    // 15b. second output fails, first output must rollback partitions 0 and 5
    mrManager.start(ImmutableMap.of("output.datasets", BOTH, OTHER_OUT, "4", "input.text", "0x 5x"));
    mrManager.waitForRuns(ProgramRunStatus.FAILED, ++numRuns, 2, TimeUnit.MINUTES);
    pfsValidator.validate();
    otherValidator.validate();
    Assert.assertFalse(other.getPartitionOutput(KEY_4).getLocation().exists());
    Assert.assertFalse(pfs.getPartitionOutput(KEY_0).getLocation().exists());
    Assert.assertFalse(pfs.getPartitionOutput(KEY_5).getLocation().exists());
}

Example 37 with DataSetException

use of io.cdap.cdap.api.dataset.DataSetException in project cdap by caskdata.

the class AppWithCustomTx method recordTransaction.

/**
 * If in a transaction, records the timeout that the current transaction was given, or "default" if no explicit
 * timeout was given. Otherwise does nothing.
 *
 * Note: we know whether and what explicit timeout was given, because we inject a {@link RevealingTxSystemClient},
 *       which returns a {@link RevealingTransaction} for {@link TransactionSystemClient#startShort(int)} only.
 */
static void recordTransaction(DatasetContext context, String row, String column) {
    TransactionCapturingTable capture = context.getDataset(CAPTURE);
    Transaction tx = capture.getTx();
    // we cannot cast because the RevealingTransaction is not visible in the program class loader
    String value = DEFAULT;
    if (tx == null) {
        try {
            capture.getTable().put(new Put(row, column, value));
            throw new RuntimeException("put to table without transaction should have failed.");
        } catch (DataSetException e) {
        // expected
        }
        return;
    }
    if ("RevealingTransaction".equals(tx.getClass().getSimpleName())) {
        int txTimeout;
        try {
            txTimeout = (int) tx.getClass().getField("timeout").get(tx);
        } catch (Exception e) {
            throw Throwables.propagate(e);
        }
        value = String.valueOf(txTimeout);
    }
    capture.getTable().put(new Put(row, column, value));
}

Example 38 with DataSetException

use of io.cdap.cdap.api.dataset.DataSetException in project cdap by caskdata.

the class PartitionedFileSetDataset method dropPartition.

@WriteOnly
@Override
public void dropPartition(PartitionKey key) {
    byte[] rowKey = generateRowKey(key, partitioning);
    PartitionDetail partition = getPartition(key);
    if (partition == null) {
        // silently ignore non-existing partitions
        return;
    }
    // TODO: make DDL operations transactional [CDAP-1393]
    dropPartitionFromExplore(key);
    partitionsTable.delete(rowKey);
    if (!isExternal) {
        Location partitionLocation = partition.getLocation();
        try {
            if (partitionLocation.exists()) {
                Location dstLocation = getQuarantineLocation().append(partition.getRelativePath());
                Location dstParent = Locations.getParent(dstLocation);
                // shouldn't be null, since dstLocation was created by appending to a location, so it must have a parent
                Preconditions.checkNotNull(dstParent);
                // before moving into quarantine, we need to ensure that parent location exists
                if (!dstParent.exists()) {
                    if (!dstParent.mkdirs()) {
                        throw new DataSetException(String.format("Failed to create parent directory %s", dstParent));
                    }
                }
                partitionLocation.renameTo(dstLocation);
            }
        } catch (IOException ioe) {
            throw new DataSetException(String.format("Failed to move location %s into quarantine", partitionLocation), ioe);
        }
        operationsInThisTx.add(new DropPartitionOperation(key, partition.getRelativePath()));
    }
}

Example 39 with DataSetException

use of io.cdap.cdap.api.dataset.DataSetException in project cdap by caskdata.

the class BufferingTable method get.

@ReadOnly
@Override
public Row get(byte[] row, byte[] startColumn, byte[] stopColumn, int limit) {
    ensureTransactionIsStarted();
    reportRead(1);
    // checking if the row was deleted inside this tx
    NavigableMap<byte[], Update> buffCols = buff.get(row);
    // potential improvement: do not fetch columns available in in-mem buffer (we know them at this point)
    try {
        Map<byte[], byte[]> persistedCols = getPersisted(row, startColumn, stopColumn, limit);
        // adding server cols, and then overriding with buffered values
        NavigableMap<byte[], byte[]> result = Maps.newTreeMap(Bytes.BYTES_COMPARATOR);
        if (persistedCols != null) {
            result.putAll(persistedCols);
        }
        if (buffCols != null) {
            buffCols = getRange(buffCols, startColumn, stopColumn, limit);
            // null valued columns in in-memory buffer are deletes, so we need to delete them from the result list
            mergeToPersisted(result, buffCols, null);
        }
        // applying limit
        return new Result(row, head(result, limit));
    } catch (Exception e) {
        LOG.debug("get failed for table: " + getTransactionAwareName() + ", row: " + Bytes.toStringBinary(row), e);
        throw new DataSetException("get failed", e);
    }
}

Example 40 with DataSetException

use of io.cdap.cdap.api.dataset.DataSetException in project cdap by caskdata.

the class BufferingTable method get.

@ReadOnly
@Override
public List<Row> get(List<Get> gets) {
    ensureTransactionIsStarted();
    try {
        // get persisted, then overwrite with whats buffered
        List<Map<byte[], byte[]>> persistedRows = getPersisted(gets);
        // gets and rows lists are always of the same size
        Preconditions.checkArgument(gets.size() == persistedRows.size(), "Invalid number of rows fetched when performing multi-get. There must be one row for each get.");
        List<Row> result = Lists.newArrayListWithCapacity(persistedRows.size());
        Iterator<Map<byte[], byte[]>> persistedRowsIter = persistedRows.iterator();
        Iterator<Get> getIter = gets.iterator();
        while (persistedRowsIter.hasNext() && getIter.hasNext()) {
            Get get = getIter.next();
            Map<byte[], byte[]> persistedRow = persistedRowsIter.next();
            // navigable copy of the persisted data. Implementation may return immutable or unmodifiable maps,
            // so we make a copy here.
            NavigableMap<byte[], byte[]> rowColumns = Maps.newTreeMap(Bytes.BYTES_COMPARATOR);
            rowColumns.putAll(persistedRow);
            byte[] row = get.getRow();
            NavigableMap<byte[], Update> buffCols = buff.get(row);
            // merge what was in the buffer and what was persisted
            if (buffCols != null) {
                List<byte[]> getColumns = get.getColumns();
                byte[][] columns = getColumns == null ? null : getColumns.toArray(new byte[getColumns.size()][]);
                mergeToPersisted(rowColumns, buffCols, columns);
            }
            result.add(new Result(row, unwrapDeletes(rowColumns)));
        }
        return result;
    } catch (Exception e) {
        LOG.debug("multi-get failed for table: " + getTransactionAwareName(), e);
        throw new DataSetException("multi-get failed", e);
    }
}