Java Code Examples for org.apache.kudu.client.KuduClient#newSession()

The following examples show how to use org.apache.kudu.client.KuduClient#newSession() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.

Example 1

Source File: SchemaEmulationByTableNameConvention.java From presto with Apache License 2.0

6 votes

@Override
public void createSchema(KuduClient client, String schemaName)
{
    if (DEFAULT_SCHEMA.equals(schemaName)) {
        throw new SchemaAlreadyExistsException(schemaName);
    }
    else {
        try {
            KuduTable schemasTable = getSchemasTable(client);
            KuduSession session = client.newSession();
            try {
                Upsert upsert = schemasTable.newUpsert();
                upsert.getRow().addString(0, schemaName);
                session.apply(upsert);
            }
            finally {
                session.close();
            }
        }
        catch (KuduException e) {
            throw new PrestoException(GENERIC_INTERNAL_ERROR, e);
        }
    }
}

Example 2

Source File: SchemaEmulationByTableNameConvention.java From presto with Apache License 2.0

6 votes

private void createAndFillSchemasTable(KuduClient client)
        throws KuduException
{
    List<String> existingSchemaNames = listSchemaNamesFromTablets(client);
    ColumnSchema schemaColumnSchema = new ColumnSchema.ColumnSchemaBuilder("schema", Type.STRING)
            .key(true).build();
    Schema schema = new Schema(ImmutableList.of(schemaColumnSchema));
    CreateTableOptions options = new CreateTableOptions();
    options.addHashPartitions(ImmutableList.of(schemaColumnSchema.getName()), 2);
    KuduTable schemasTable = client.createTable(rawSchemasTableName, schema, options);
    KuduSession session = client.newSession();
    try {
        session.setFlushMode(SessionConfiguration.FlushMode.AUTO_FLUSH_BACKGROUND);
        for (String schemaName : existingSchemaNames) {
            Insert insert = schemasTable.newInsert();
            insert.getRow().addString(0, schemaName);
            session.apply(insert);
        }
    }
    finally {
        session.close();
    }
}

Example 3

Source File: SchemaEmulationByTableNameConvention.java From presto with Apache License 2.0

5 votes

@Override
public void dropSchema(KuduClient client, String schemaName)
{
    if (DEFAULT_SCHEMA.equals(schemaName)) {
        throw new PrestoException(GENERIC_USER_ERROR, "Deleting default schema not allowed.");
    }
    else {
        try {
            String prefix = getPrefixForTablesOfSchema(schemaName);
            for (String name : client.getTablesList(prefix).getTablesList()) {
                client.deleteTable(name);
            }

            KuduTable schemasTable = getSchemasTable(client);
            KuduSession session = client.newSession();
            try {
                Delete delete = schemasTable.newDelete();
                delete.getRow().addString(0, schemaName);
                session.apply(delete);
            }
            finally {
                session.close();
            }
        }
        catch (KuduException e) {
            throw new PrestoException(GENERIC_INTERNAL_ERROR, e);
        }
    }
}

Example 4

Source File: ITestKuduLookupService.java From nifi with Apache License 2.0

4 votes

@Before
public void init() throws Exception {
    testRunner = TestRunners.newTestRunner(SampleProcessor.class);
    testRunner.setValidateExpressionUsage(false);
    final String tableName = "table1";

    KuduClient client =  harness.getClient();
    List<ColumnSchema> columns = new ArrayList<>();
    columns.add(new ColumnSchema.ColumnSchemaBuilder("string", Type.STRING).key(true).build());
    columns.add(new ColumnSchema.ColumnSchemaBuilder("binary", Type.BINARY).build());
    columns.add(new ColumnSchema.ColumnSchemaBuilder("bool", Type.BOOL).build());
    columns.add(new ColumnSchema
            .ColumnSchemaBuilder("decimal", Type.DECIMAL)
            .typeAttributes(DecimalUtil.typeAttributes(DecimalUtil.MAX_DECIMAL64_PRECISION, 1))
            .build()
    );
    columns.add(new ColumnSchema.ColumnSchemaBuilder("double", Type.DOUBLE).build());
    columns.add(new ColumnSchema.ColumnSchemaBuilder("float", Type.FLOAT).build());
    columns.add(new ColumnSchema.ColumnSchemaBuilder("int8", Type.INT8).build());
    columns.add(new ColumnSchema.ColumnSchemaBuilder("int16", Type.INT16).build());
    columns.add(new ColumnSchema.ColumnSchemaBuilder("int32", Type.INT32).build());
    columns.add(new ColumnSchema.ColumnSchemaBuilder("int64", Type.INT64).build());
    columns.add(new ColumnSchema.ColumnSchemaBuilder("unixtime_micros", Type.UNIXTIME_MICROS).build());
    columns.add(new ColumnSchema.ColumnSchemaBuilder("varchar_3", Type.VARCHAR).typeAttributes(
            new ColumnTypeAttributes.ColumnTypeAttributesBuilder().length(3).build()
    ).build());
    Schema schema = new Schema(columns);

    CreateTableOptions opts = new CreateTableOptions().setRangePartitionColumns(Collections.singletonList("string"));
    client.createTable(tableName, schema, opts);

    KuduTable table = client.openTable(tableName);
    KuduSession session = client.newSession();

    Insert insert = table.newInsert();
    PartialRow row = insert.getRow();
    row.addString("string", "string1");
    row.addBinary("binary", "binary1".getBytes());
    row.addBoolean("bool",true);
    row.addDecimal("decimal", BigDecimal.valueOf(0.1));
    row.addDouble("double",0.2);
    row.addFloat("float",0.3f);
    row.addByte("int8", (byte) 1);
    row.addShort("int16", (short) 2);
    row.addInt("int32",3);
    row.addLong("int64",4L);
    row.addTimestamp("unixtime_micros", new Timestamp(nowMillis));
    row.addVarchar("varchar_3", "SFO");
    session.apply(insert);

    insert = table.newInsert();
    row = insert.getRow();
    row.addString("string", "string2");
    row.addBinary("binary", "binary2".getBytes());
    row.addBoolean("bool",false);
    row.addDecimal("decimal", BigDecimal.valueOf(0.1));
    row.addDouble("double",1.2);
    row.addFloat("float",1.3f);
    row.addByte("int8", (byte) 11);
    row.addShort("int16", (short) 12);
    row.addInt("int32",13);
    row.addLong("int64",14L);
    row.addTimestamp("unixtime_micros", new Timestamp(nowMillis+(1000L * 60 * 60 * 24 * 365))); //+ 1 year
    row.addVarchar("varchar_3", "SJC");
    session.apply(insert);

    session.close();

    kuduLookupService = new KuduLookupService();
    testRunner.addControllerService("kuduLookupService", kuduLookupService);
    testRunner.setProperty(kuduLookupService, KuduLookupService.KUDU_MASTERS, "testLocalHost:7051");
    testRunner.setProperty(kuduLookupService, KuduLookupService.KUDU_REPLICA_SELECTION, KuduLookupService.LEADER_ONLY);
    testRunner.setProperty(kuduLookupService, KuduLookupService.TABLE_NAME, tableName);
    kuduLookupService.kuduClient = client;
}

Example 5

Source File: PutKudu.java From nifi with Apache License 2.0

4 votes

protected KuduSession createKuduSession(final KuduClient client) {
    final KuduSession kuduSession = client.newSession();
    kuduSession.setMutationBufferSpace(batchSize);
    kuduSession.setFlushMode(flushMode);
    return kuduSession;
}

Example 6

Source File: DafAbstractKudu.java From daf-kylo with GNU Affero General Public License v3.0

3 votes

protected KuduSession getKuduSession(KuduClient client){

        KuduSession kuduSession = client.newSession();

        kuduSession.setMutationBufferSpace(batchSize);
        kuduSession.setFlushMode(flushMode);

        if(operationType == DafOperationType.INSERT_IGNORE){
            kuduSession.setIgnoreAllDuplicateRows(true);
        }

        return kuduSession;
    }