[
https://issues.apache.org/jira/browse/HIVE-25596?focusedWorklogId=674329&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-674329
]
ASF GitHub Bot logged work on HIVE-25596:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 03/Nov/21 02:34
Start Date: 03/Nov/21 02:34
Worklog Time Spent: 10m
Work Description: hmangla98 commented on a change in pull request #2724:
URL: https://github.com/apache/hive/pull/2724#discussion_r741581141
##########
File path:
ql/src/java/org/apache/hadoop/hive/ql/udf/generic/GenericUDFDeserialize.java
##########
@@ -0,0 +1,86 @@
+/*
+ * 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.
+ */
+package org.apache.hadoop.hive.ql.udf.generic;
+
+import org.apache.hadoop.hive.metastore.messaging.json.JSONMessageEncoder;
+import
org.apache.hadoop.hive.metastore.messaging.json.gzip.GzipJSONMessageEncoder;
+import org.apache.hadoop.hive.ql.exec.Description;
+import org.apache.hadoop.hive.ql.exec.UDFArgumentException;
+import org.apache.hadoop.hive.ql.exec.UDFArgumentTypeException;
+import org.apache.hadoop.hive.ql.metadata.HiveException;
+import org.apache.hadoop.hive.serde2.objectinspector.ObjectInspector;
+import org.apache.hadoop.hive.serde2.objectinspector.PrimitiveObjectInspector;
+import
org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorFactory;
+import
org.apache.hadoop.hive.serde2.objectinspector.primitive.PrimitiveObjectInspectorUtils;
+
+/**
+ * GenericUDFDeserializeString.
+ *
+ */
+@Description(name = "deserialize",
+ value="_FUNC_(message, encodingFormat) - Returns deserialized string
of encoded message.",
+ extended="Example:\n"
+ + " > SELECT _FUNC_('H4sIAAAAAAAA/ytJLS4BAAx+f9gEAAAA',
'gzip(json-2.0)') FROM src LIMIT 1;\n"
+ + " test")
+public class GenericUDFDeserialize extends GenericUDF {
+
+ private static final int ARG_COUNT = 2; // Number of arguments to this UDF
+ private static final String FUNC_NAME = "deserialize"; // External Name
+
+ private transient PrimitiveObjectInspector stringOI = null;
+ private transient PrimitiveObjectInspector encodingFormat = null;
+
+ @Override
+ public ObjectInspector initialize(ObjectInspector[] arguments)
+ throws UDFArgumentException {
+ if (arguments.length != ARG_COUNT) {
+ throw new UDFArgumentException("The function " + FUNC_NAME + "
accepts " + ARG_COUNT + " arguments.");
+ }
+ for (ObjectInspector arg: arguments) {
+ if (arg.getCategory() != ObjectInspector.Category.PRIMITIVE ||
+
PrimitiveObjectInspectorUtils.PrimitiveGrouping.STRING_GROUP !=
PrimitiveObjectInspectorUtils.getPrimitiveGrouping(
+
((PrimitiveObjectInspector)arg).getPrimitiveCategory())){
+ throw new UDFArgumentTypeException(0, "The arguments to " +
FUNC_NAME + " must be a string/varchar");
+ }
+ }
+ stringOI = (PrimitiveObjectInspector) arguments[0];
+ encodingFormat = (PrimitiveObjectInspector) arguments[1];
+ return PrimitiveObjectInspectorFactory.javaStringObjectInspector;
+ }
+
+ @Override
+ public Object evaluate(DeferredObject[] arguments) throws HiveException {
+ String value =
PrimitiveObjectInspectorUtils.getString(arguments[0].get(), stringOI);
+ String messageFormat =
PrimitiveObjectInspectorUtils.getString(arguments[1].get(), encodingFormat);
+ if (value == null) {
+ return null;
+ } else if (messageFormat == null || messageFormat.isEmpty() ||
JSONMessageEncoder.FORMAT.equalsIgnoreCase(value)) {
+ return value;
+ } else if
(GzipJSONMessageEncoder.FORMAT.equalsIgnoreCase(messageFormat)) {
+ return
GzipJSONMessageEncoder.getInstance().getDeserializer().deSerializeGenericString(value);
+ } else {
+ throw new HiveException("Invalid message format provided: " +
messageFormat + " for message: " + value);
Review comment:
Already included in TestGenericUDFDeserialize#testInvalidMessageString
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Issue Time Tracking
-------------------
Worklog Id: (was: 674329)
Time Spent: 3h (was: 2h 50m)
> Compress Hive Replication Metrics while storing
> -----------------------------------------------
>
> Key: HIVE-25596
> URL: https://issues.apache.org/jira/browse/HIVE-25596
> Project: Hive
> Issue Type: Improvement
> Reporter: Haymant Mangla
> Assignee: Haymant Mangla
> Priority: Major
> Labels: pull-request-available
> Time Spent: 3h
> Remaining Estimate: 0h
>
> Compress the json fields of sys.replication_metrics table to optimise RDBMS
> space usage.
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