Examples with ByteIterator com.yahoo.ycsb.ByteIterator used on opensource projects

Example 71 with ByteIterator

use of com.yahoo.ycsb.ByteIterator in project YCSB by brianfrankcooper.

the class AbstractDBTestCases method testInsertReadUpdateWithUpsert.

/**
   * Test method for {@link DB#insert}, {@link DB#read}, and {@link DB#update} .
   */
@Test
public void testInsertReadUpdateWithUpsert() {
    Properties props = new Properties();
    props.setProperty("mongodb.upsert", "true");
    DB client = getDB(props);
    final String table = getClass().getSimpleName();
    final String id = "updateWithUpsert";
    HashMap<String, ByteIterator> inserted = new HashMap<String, ByteIterator>();
    inserted.put("a", new ByteArrayByteIterator(new byte[] { 1, 2, 3, 4 }));
    Status result = client.insert(table, id, inserted);
    assertThat("Insert did not return success (0).", result, is(Status.OK));
    HashMap<String, ByteIterator> read = new HashMap<String, ByteIterator>();
    Set<String> keys = Collections.singleton("a");
    result = client.read(table, id, keys, read);
    assertThat("Read did not return success (0).", result, is(Status.OK));
    for (String key : keys) {
        ByteIterator iter = read.get(key);
        assertThat("Did not read the inserted field: " + key, iter, notNullValue());
        assertTrue(iter.hasNext());
        assertThat(iter.nextByte(), is(Byte.valueOf((byte) 1)));
        assertTrue(iter.hasNext());
        assertThat(iter.nextByte(), is(Byte.valueOf((byte) 2)));
        assertTrue(iter.hasNext());
        assertThat(iter.nextByte(), is(Byte.valueOf((byte) 3)));
        assertTrue(iter.hasNext());
        assertThat(iter.nextByte(), is(Byte.valueOf((byte) 4)));
        assertFalse(iter.hasNext());
    }
    HashMap<String, ByteIterator> updated = new HashMap<String, ByteIterator>();
    updated.put("a", new ByteArrayByteIterator(new byte[] { 5, 6, 7, 8 }));
    result = client.update(table, id, updated);
    assertThat("Update did not return success (0).", result, is(Status.OK));
    read.clear();
    result = client.read(table, id, null, read);
    assertThat("Read, after update, did not return success (0).", result, is(Status.OK));
    for (String key : keys) {
        ByteIterator iter = read.get(key);
        assertThat("Did not read the inserted field: " + key, iter, notNullValue());
        assertTrue(iter.hasNext());
        assertThat(iter.nextByte(), is(Byte.valueOf((byte) 5)));
        assertTrue(iter.hasNext());
        assertThat(iter.nextByte(), is(Byte.valueOf((byte) 6)));
        assertTrue(iter.hasNext());
        assertThat(iter.nextByte(), is(Byte.valueOf((byte) 7)));
        assertTrue(iter.hasNext());
        assertThat(iter.nextByte(), is(Byte.valueOf((byte) 8)));
        assertFalse(iter.hasNext());
    }
}

Example 72 with ByteIterator

use of com.yahoo.ycsb.ByteIterator in project YCSB by brianfrankcooper.

the class HBaseClient method scan.

/**
   * Perform a range scan for a set of records in the database. Each field/value pair from the result will be stored
   * in a HashMap.
   *
   * @param table       The name of the tableName
   * @param startkey    The record key of the first record to read.
   * @param recordcount The number of records to read
   * @param fields      The list of fields to read, or null for all of them
   * @param result      A Vector of HashMaps, where each HashMap is a set field/value pairs for one record
   * @return Zero on success, a non-zero error code on error
   */
public Status scan(String table, String startkey, int recordcount, Set<String> fields, Vector<HashMap<String, ByteIterator>> result) {
    //if this is a "new" tableName, init HTable object.  Else, use existing one
    if (!this.tableName.equals(table)) {
        hTable = null;
        try {
            getHTable(table);
            this.tableName = table;
        } catch (IOException e) {
            System.err.println("Error accessing HBase tableName: " + e);
            return Status.ERROR;
        }
    }
    Scan s = new Scan(Bytes.toBytes(startkey));
    //HBase has no record limit.  Here, assume recordcount is small enough to bring back in one call.
    //We get back recordcount records
    s.setCaching(recordcount);
    if (this.usePageFilter) {
        s.setFilter(new PageFilter(recordcount));
    }
    //add specified fields or else all fields
    if (fields == null) {
        s.addFamily(columnFamilyBytes);
    } else {
        for (String field : fields) {
            s.addColumn(columnFamilyBytes, Bytes.toBytes(field));
        }
    }
    //get results
    try (ResultScanner scanner = hTable.getScanner(s)) {
        int numResults = 0;
        for (Result rr = scanner.next(); rr != null; rr = scanner.next()) {
            //get row key
            String key = Bytes.toString(rr.getRow());
            if (debug) {
                System.out.println("Got scan result for key: " + key);
            }
            HashMap<String, ByteIterator> rowResult = new HashMap<>();
            for (KeyValue kv : rr.raw()) {
                rowResult.put(Bytes.toString(kv.getQualifier()), new ByteArrayByteIterator(kv.getValue()));
            }
            //add rowResult to result vector
            result.add(rowResult);
            numResults++;
            //if hit recordcount, bail out
            if (numResults >= recordcount) {
                break;
            }
        }
    //done with row
    } catch (IOException e) {
        if (debug) {
            System.out.println("Error in getting/parsing scan result: " + e);
        }
        return Status.ERROR;
    }
    return Status.OK;
}

Example 73 with ByteIterator

use of com.yahoo.ycsb.ByteIterator in project YCSB by brianfrankcooper.

the class AsyncMongoDbClient method scan.

/**
   * Perform a range scan for a set of records in the database. Each field/value
   * pair from the result will be stored in a HashMap.
   * 
   * @param table
   *          The name of the table
   * @param startkey
   *          The record key of the first record to read.
   * @param recordcount
   *          The number of records to read
   * @param fields
   *          The list of fields to read, or null for all of them
   * @param result
   *          A Vector of HashMaps, where each HashMap is a set field/value
   *          pairs for one record
   * @return Zero on success, a non-zero error code on error. See the {@link DB}
   *         class's description for a discussion of error codes.
   */
@Override
public final Status scan(final String table, final String startkey, final int recordcount, final Set<String> fields, final Vector<HashMap<String, ByteIterator>> result) {
    try {
        final MongoCollection collection = database.getCollection(table);
        final Find.Builder find = Find.builder().query(where("_id").greaterThanOrEqualTo(startkey)).limit(recordcount).batchSize(recordcount).sort(Sort.asc("_id")).readPreference(readPreference);
        if (fields != null) {
            final DocumentBuilder fieldsDoc = BuilderFactory.start();
            for (final String field : fields) {
                fieldsDoc.add(field, INCLUDE);
            }
            find.projection(fieldsDoc);
        }
        result.ensureCapacity(recordcount);
        final MongoIterator<Document> cursor = collection.find(find);
        if (!cursor.hasNext()) {
            System.err.println("Nothing found in scan for key " + startkey);
            return Status.NOT_FOUND;
        }
        while (cursor.hasNext()) {
            // toMap() returns a Map but result.add() expects a
            // Map<String,String>. Hence, the suppress warnings.
            final Document doc = cursor.next();
            final HashMap<String, ByteIterator> docAsMap = new HashMap<String, ByteIterator>();
            fillMap(docAsMap, doc);
            result.add(docAsMap);
        }
        return Status.OK;
    } catch (final Exception e) {
        System.err.println(e.toString());
        return Status.ERROR;
    }
}

Example 74 with ByteIterator

use of com.yahoo.ycsb.ByteIterator in project YCSB by brianfrankcooper.

the class AsyncMongoDbClient method insert.

/**
   * Insert a record in the database. Any field/value pairs in the specified
   * values HashMap will be written into the record with the specified record
   * key.
   * 
   * @param table
   *          The name of the table
   * @param key
   *          The record key of the record to insert.
   * @param values
   *          A HashMap of field/value pairs to insert in the record
   * @return Zero on success, a non-zero error code on error. See the {@link DB}
   *         class's description for a discussion of error codes.
   */
@Override
public final Status insert(final String table, final String key, final HashMap<String, ByteIterator> values) {
    try {
        final MongoCollection collection = database.getCollection(table);
        final DocumentBuilder toInsert = DOCUMENT_BUILDER.get().reset().add("_id", key);
        final Document query = toInsert.build();
        for (final Map.Entry<String, ByteIterator> entry : values.entrySet()) {
            toInsert.add(entry.getKey(), entry.getValue().toArray());
        }
        // Do an upsert.
        if (batchSize <= 1) {
            long result;
            if (useUpsert) {
                result = collection.update(query, toInsert, /* multi= */
                false, /* upsert= */
                true, writeConcern);
            } else {
                // Return is not stable pre-SERVER-4381. No exception is success.
                collection.insert(writeConcern, toInsert);
                result = 1;
            }
            return result == 1 ? Status.OK : Status.NOT_FOUND;
        }
        // Use a bulk insert.
        try {
            if (useUpsert) {
                batchedWrite.update(query, toInsert, /* multi= */
                false, /* upsert= */
                true);
            } else {
                batchedWrite.insert(toInsert);
            }
            batchedWriteCount += 1;
            if (batchedWriteCount < batchSize) {
                return Status.BATCHED_OK;
            }
            long count = collection.write(batchedWrite);
            if (count == batchedWriteCount) {
                batchedWrite.reset().mode(BatchedWriteMode.REORDERED);
                batchedWriteCount = 0;
                return Status.OK;
            }
            System.err.println("Number of inserted documents doesn't match the " + "number sent, " + count + " inserted, sent " + batchedWriteCount);
            batchedWrite.reset().mode(BatchedWriteMode.REORDERED);
            batchedWriteCount = 0;
            return Status.ERROR;
        } catch (Exception e) {
            System.err.println("Exception while trying bulk insert with " + batchedWriteCount);
            e.printStackTrace();
            return Status.ERROR;
        }
    } catch (final Exception e) {
        e.printStackTrace();
        return Status.ERROR;
    }
}

Example 75 with ByteIterator

use of com.yahoo.ycsb.ByteIterator in project YCSB by brianfrankcooper.

the class OrientDBClientTest method insertRow.

/*
      Inserts a row of deterministic values for the given insertKey using the orientDBClient.
   */
private Map<String, ByteIterator> insertRow(String insertKey) {
    HashMap<String, ByteIterator> insertMap = new HashMap<>();
    for (int i = 0; i < 3; i++) {
        insertMap.put(FIELD_PREFIX + i, new StringByteIterator(buildDeterministicValue(insertKey, FIELD_PREFIX + i)));
    }
    orientDBClient.insert(CLASS, insertKey, insertMap);
    return insertMap;
}