Github user siddhimehta commented on a diff in the pull request:
https://github.com/apache/phoenix/pull/98#discussion_r34329942
--- Diff:
phoenix-pig/src/main/java/org/apache/phoenix/pig/udf/ReserveNSequence.java ---
@@ -0,0 +1,88 @@
+/**
+ *
+ */
+package org.apache.phoenix.pig.udf;
+
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
contributor license agreements. See the NOTICE
+ * file distributed with this work for additional information regarding
copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the "License"); you may
not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0 Unless required by
+ * applicable law or agreed to in writing, software distributed under the
License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied. See the License for the specific language
+ * governing permissions and limitations under the License.
+ */
+import java.io.IOException;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.HConstants;
+import org.apache.phoenix.mapreduce.util.ConnectionUtil;
+import org.apache.pig.EvalFunc;
+import org.apache.pig.data.Tuple;
+import org.apache.pig.impl.util.UDFContext;
+
+import com.google.common.base.Preconditions;
+
+/**
+ * UDF to Reserve a chunk of numbers for a given sequence
+ *
+ * @note The way this UDF is invoked we open a new connection for every
tuple row. The UDF will not perform well on
+ * large datasets as it involves creating a new connection for every
tuple row
+ */
+public class ReserveNSequence extends EvalFunc<Long> {
+
+ public static final String INVALID_TUPLE_MESSAGE = "Tuple should have
correct fields(NumtoReserve,SequenceName,zkquorum.";
+ public static final String EMPTY_SEQUENCE_NAME_MESSAGE = "Sequence
name should be not null";
+ public static final String EMPTY_ZK_MESSAGE = "ZKQuorum should be not
null";
+ public static final String INVALID_NUMBER_MESSAGE = "NUmber of
Sequences to Reserve should be greater than 0";
+ public static final String SEQUENCE_NAME_CONF_KEY =
"phoenix.sequence.name";
+
+ /**
+ * Reserve N next sequences for a sequence name. N is the first field
in the tuple. Sequence name is the second
+ * field in the tuple zkquorum is the third field in the tuple
+ */
+ @Override
+ public Long exec(Tuple input) throws IOException {
--- End diff --
UDF that taken in tuple with number,sequenceName,ZkEndpoint and bulk
reserves the sequence
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