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The following commit(s) were added to refs/heads/master by this push:
     new 9627a38  [HUDI-916]: Added support for multiple input formats in 
TimestampBasedKeyGenerator (#1648)
9627a38 is described below

commit 9627a385febbc8769021e7d0a805756b74c2a82a
Author: Pratyaksh Sharma <[email protected]>
AuthorDate: Sat Jul 11 00:58:45 2020 +0530

    [HUDI-916]: Added support for multiple input formats in 
TimestampBasedKeyGenerator (#1648)
---
 .../main/java/org/apache/hudi/DataSourceUtils.java |  16 ++
 .../org/apache/hudi/keygen/CustomKeyGenerator.java |   7 +-
 .../hudi/keygen/TimestampBasedKeyGenerator.java    |  87 ++++++-----
 .../hudi/keygen/parser/HoodieDateTimeParser.java   |  48 ++++++
 .../keygen/parser/HoodieDateTimeParserImpl.java    | 122 +++++++++++++++
 .../keygen/TestTimestampBasedKeyGenerator.java     | 170 ++++++++++++++++++++-
 .../org/apache/hudi/utilities/UtilHelpers.java     |   7 -
 7 files changed, 405 insertions(+), 52 deletions(-)

diff --git a/hudi-spark/src/main/java/org/apache/hudi/DataSourceUtils.java 
b/hudi-spark/src/main/java/org/apache/hudi/DataSourceUtils.java
index 0a915c1..fe68af9 100644
--- a/hudi-spark/src/main/java/org/apache/hudi/DataSourceUtils.java
+++ b/hudi-spark/src/main/java/org/apache/hudi/DataSourceUtils.java
@@ -38,6 +38,7 @@ import org.apache.hudi.hive.HiveSyncConfig;
 import org.apache.hudi.hive.SlashEncodedDayPartitionValueExtractor;
 import org.apache.hudi.index.HoodieIndex;
 import org.apache.hudi.keygen.KeyGenerator;
+import org.apache.hudi.keygen.parser.HoodieDateTimeParser;
 import org.apache.hudi.table.UserDefinedBulkInsertPartitioner;
 
 import org.apache.avro.LogicalTypes;
@@ -156,6 +157,21 @@ public class DataSourceUtils {
   }
 
   /**
+   * Create a date time parser class for TimestampBasedKeyGenerator, passing 
in any configs needed.
+   * @param props
+   * @param parserClass
+   * @return
+   * @throws IOException
+   */
+  public static HoodieDateTimeParser createDateTimeParser(TypedProperties 
props, String parserClass) throws IOException {
+    try {
+      return (HoodieDateTimeParser) ReflectionUtils.loadClass(parserClass, 
props);
+    } catch (Throwable e) {
+      throw new IOException("Could not load date time parser class " + 
parserClass, e);
+    }
+  }
+
+  /**
    * Create a UserDefinedBulkInsertPartitioner class via reflection,
    * <br>
    * if the class name of UserDefinedBulkInsertPartitioner is configured 
through the HoodieWriteConfig.
diff --git 
a/hudi-spark/src/main/java/org/apache/hudi/keygen/CustomKeyGenerator.java 
b/hudi-spark/src/main/java/org/apache/hudi/keygen/CustomKeyGenerator.java
index be2d1ef..6240f83 100644
--- a/hudi-spark/src/main/java/org/apache/hudi/keygen/CustomKeyGenerator.java
+++ b/hudi-spark/src/main/java/org/apache/hudi/keygen/CustomKeyGenerator.java
@@ -26,6 +26,7 @@ import org.apache.avro.generic.GenericRecord;
 import org.apache.hudi.exception.HoodieDeltaStreamerException;
 import org.apache.hudi.exception.HoodieKeyException;
 
+import java.io.IOException;
 import java.util.Arrays;
 import java.util.List;
 import java.util.stream.Collectors;
@@ -103,7 +104,11 @@ public class CustomKeyGenerator extends KeyGenerator {
           partitionPath.append(new 
SimpleKeyGenerator(properties).getPartitionPath(record, partitionPathField));
           break;
         case TIMESTAMP:
-          partitionPath.append(new 
TimestampBasedKeyGenerator(properties).getPartitionPath(record, 
partitionPathField));
+          try {
+            partitionPath.append(new 
TimestampBasedKeyGenerator(properties).getPartitionPath(record, 
partitionPathField));
+          } catch (IOException ioe) {
+            throw new HoodieDeltaStreamerException("Unable to initialise 
TimestampBasedKeyGenerator class");
+          }
           break;
         default:
           throw new HoodieDeltaStreamerException("Please provide valid 
PartitionKeyType with fields! You provided: " + keyType);
diff --git 
a/hudi-spark/src/main/java/org/apache/hudi/keygen/TimestampBasedKeyGenerator.java
 
b/hudi-spark/src/main/java/org/apache/hudi/keygen/TimestampBasedKeyGenerator.java
index c088513..7c34ef7 100644
--- 
a/hudi-spark/src/main/java/org/apache/hudi/keygen/TimestampBasedKeyGenerator.java
+++ 
b/hudi-spark/src/main/java/org/apache/hudi/keygen/TimestampBasedKeyGenerator.java
@@ -21,18 +21,19 @@ package org.apache.hudi.keygen;
 import org.apache.hudi.DataSourceUtils;
 import org.apache.hudi.common.model.HoodieKey;
 import org.apache.hudi.common.config.TypedProperties;
-import org.apache.hudi.exception.HoodieNotSupportedException;
 import org.apache.hudi.exception.HoodieDeltaStreamerException;
+import org.apache.hudi.exception.HoodieNotSupportedException;
 
 import org.apache.avro.generic.GenericRecord;
-
+import org.apache.hudi.keygen.parser.HoodieDateTimeParser;
+import org.apache.hudi.keygen.parser.HoodieDateTimeParserImpl;
+import org.joda.time.DateTime;
+import org.joda.time.DateTimeZone;
+import org.joda.time.format.DateTimeFormat;
+import org.joda.time.format.DateTimeFormatter;
+
+import java.io.IOException;
 import java.io.Serializable;
-import java.text.ParseException;
-import java.text.SimpleDateFormat;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.Date;
-import java.util.TimeZone;
 import java.util.concurrent.TimeUnit;
 
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
@@ -43,52 +44,54 @@ import static java.util.concurrent.TimeUnit.SECONDS;
  */
 public class TimestampBasedKeyGenerator extends SimpleKeyGenerator {
 
-  enum TimestampType implements Serializable {
+  public enum TimestampType implements Serializable {
     UNIX_TIMESTAMP, DATE_STRING, MIXED, EPOCHMILLISECONDS, SCALAR
   }
 
   private final TimeUnit timeUnit;
-
   private final TimestampType timestampType;
-
-  private SimpleDateFormat inputDateFormat;
-
   private final String outputDateFormat;
+  private DateTimeFormatter inputFormatter;
+  private final HoodieDateTimeParser parser;
 
   // TimeZone detailed settings reference
   // https://docs.oracle.com/javase/8/docs/api/java/util/TimeZone.html
-  private final TimeZone timeZone;
+  private final DateTimeZone outputDateTimeZone;
 
   /**
    * Supported configs.
    */
-  static class Config {
+  public static class Config {
 
     // One value from TimestampType above
-    private static final String TIMESTAMP_TYPE_FIELD_PROP = 
"hoodie.deltastreamer.keygen.timebased.timestamp.type";
-    private static final String INPUT_TIME_UNIT =
+    public static final String TIMESTAMP_TYPE_FIELD_PROP = 
"hoodie.deltastreamer.keygen.timebased.timestamp.type";
+    public static final String INPUT_TIME_UNIT =
         "hoodie.deltastreamer.keygen.timebased.timestamp.scalar.time.unit";
-    private static final String TIMESTAMP_INPUT_DATE_FORMAT_PROP =
+    //This prop can now accept list of input date formats.
+    public static final String TIMESTAMP_INPUT_DATE_FORMAT_PROP =
         "hoodie.deltastreamer.keygen.timebased.input.dateformat";
-    private static final String TIMESTAMP_OUTPUT_DATE_FORMAT_PROP =
+    public static final String 
TIMESTAMP_INPUT_DATE_FORMAT_LIST_DELIMITER_REGEX_PROP = 
"hoodie.deltastreamer.keygen.timebased.input.dateformat.list.delimiter.regex";
+    public static final String TIMESTAMP_INPUT_TIMEZONE_FORMAT_PROP = 
"hoodie.deltastreamer.keygen.timebased.input.timezone";
+    public static final String TIMESTAMP_OUTPUT_DATE_FORMAT_PROP =
         "hoodie.deltastreamer.keygen.timebased.output.dateformat";
-    private static final String TIMESTAMP_TIMEZONE_FORMAT_PROP =
+    //still keeping this prop for backward compatibility so that functionality 
for existing users does not break.
+    public static final String TIMESTAMP_TIMEZONE_FORMAT_PROP =
         "hoodie.deltastreamer.keygen.timebased.timezone";
+    public static final String TIMESTAMP_OUTPUT_TIMEZONE_FORMAT_PROP = 
"hoodie.deltastreamer.keygen.timebased.output.timezone";
+    static final String DATE_TIME_PARSER_PROP = 
"hoodie.deltastreamer.keygen.datetime.parser.class";
   }
 
-  public TimestampBasedKeyGenerator(TypedProperties config) {
+  public TimestampBasedKeyGenerator(TypedProperties config) throws IOException 
{
     super(config);
-    DataSourceUtils.checkRequiredProperties(config,
-        Arrays.asList(Config.TIMESTAMP_TYPE_FIELD_PROP, 
Config.TIMESTAMP_OUTPUT_DATE_FORMAT_PROP));
+    String dateTimeParserClass = 
config.getString(Config.DATE_TIME_PARSER_PROP, 
HoodieDateTimeParserImpl.class.getName());
+    this.parser = DataSourceUtils.createDateTimeParser(config, 
dateTimeParserClass);
+    this.outputDateTimeZone = parser.getOutputDateTimeZone();
+    this.outputDateFormat = parser.getOutputDateFormat();
+    this.inputFormatter = parser.getInputFormatter();
     this.timestampType = 
TimestampType.valueOf(config.getString(Config.TIMESTAMP_TYPE_FIELD_PROP));
-    this.outputDateFormat = 
config.getString(Config.TIMESTAMP_OUTPUT_DATE_FORMAT_PROP);
-    this.timeZone = 
TimeZone.getTimeZone(config.getString(Config.TIMESTAMP_TIMEZONE_FORMAT_PROP, 
"GMT"));
 
     if (timestampType == TimestampType.DATE_STRING || timestampType == 
TimestampType.MIXED) {
-      DataSourceUtils.checkRequiredProperties(config,
-          Collections.singletonList(Config.TIMESTAMP_INPUT_DATE_FORMAT_PROP));
-      this.inputDateFormat = new 
SimpleDateFormat(config.getString(Config.TIMESTAMP_INPUT_DATE_FORMAT_PROP));
-      this.inputDateFormat.setTimeZone(timeZone);
+      this.inputFormatter = parser.getInputFormatter();
     }
 
     switch (this.timestampType) {
@@ -119,8 +122,11 @@ public class TimestampBasedKeyGenerator extends 
SimpleKeyGenerator {
     if (partitionVal == null) {
       partitionVal = 1L;
     }
-    SimpleDateFormat partitionPathFormat = new 
SimpleDateFormat(outputDateFormat);
-    partitionPathFormat.setTimeZone(timeZone);
+
+    DateTimeFormatter partitionFormatter = 
DateTimeFormat.forPattern(outputDateFormat);
+    if (this.outputDateTimeZone != null) {
+      partitionFormatter = partitionFormatter.withZone(outputDateTimeZone);
+    }
 
     try {
       long timeMs;
@@ -131,17 +137,23 @@ public class TimestampBasedKeyGenerator extends 
SimpleKeyGenerator {
       } else if (partitionVal instanceof Long) {
         timeMs = convertLongTimeToMillis((Long) partitionVal);
       } else if (partitionVal instanceof CharSequence) {
-        timeMs = inputDateFormat.parse(partitionVal.toString()).getTime();
+        DateTime parsedDateTime = 
inputFormatter.parseDateTime(partitionVal.toString());
+        if (this.outputDateTimeZone == null) {
+          // Use the timezone that came off the date that was passed in, if it 
had one
+          partitionFormatter = 
partitionFormatter.withZone(parsedDateTime.getZone());
+        }
+
+        timeMs = 
inputFormatter.parseDateTime(partitionVal.toString()).getMillis();
       } else {
         throw new HoodieNotSupportedException(
           "Unexpected type for partition field: " + 
partitionVal.getClass().getName());
       }
-      Date timestamp = new Date(timeMs);
+      DateTime timestamp = new DateTime(timeMs, outputDateTimeZone);
 
-      return hiveStylePartitioning ? partitionPathField + "=" + 
partitionPathFormat.format(timestamp)
-        : partitionPathFormat.format(timestamp);
-    } catch (ParseException pe) {
-      throw new HoodieDeltaStreamerException("Unable to parse input partition 
field :" + partitionVal, pe);
+      return hiveStylePartitioning ? partitionPathField + "=" + 
timestamp.toString(partitionFormatter)
+        : timestamp.toString(partitionFormatter);
+    } catch (Exception e) {
+      throw new HoodieDeltaStreamerException("Unable to parse input partition 
field :" + partitionVal, e);
     }
   }
 
@@ -150,7 +162,6 @@ public class TimestampBasedKeyGenerator extends 
SimpleKeyGenerator {
       // should not be possible
       throw new RuntimeException(Config.INPUT_TIME_UNIT + " is not specified 
but scalar it supplied as time value");
     }
-
     return MILLISECONDS.convert(partitionVal, timeUnit);
   }
 }
diff --git 
a/hudi-spark/src/main/java/org/apache/hudi/keygen/parser/HoodieDateTimeParser.java
 
b/hudi-spark/src/main/java/org/apache/hudi/keygen/parser/HoodieDateTimeParser.java
new file mode 100644
index 0000000..3550193
--- /dev/null
+++ 
b/hudi-spark/src/main/java/org/apache/hudi/keygen/parser/HoodieDateTimeParser.java
@@ -0,0 +1,48 @@
+/*
+ * 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.hudi.keygen.parser;
+
+import org.joda.time.DateTimeZone;
+import org.joda.time.format.DateTimeFormatter;
+
+public interface HoodieDateTimeParser {
+
+  /**
+   * Returns the output date format in which the partition paths will be 
created for the hudi dataset.
+   * @return
+   */
+  String getOutputDateFormat();
+
+  /**
+   * Returns input formats in which datetime based values might be coming in 
incoming records.
+   * @return
+   */
+  DateTimeFormatter getInputFormatter();
+
+  /**
+   * Returns the datetime zone one should expect the incoming values into.
+   * @return
+   */
+  DateTimeZone getInputDateTimeZone();
+
+  /**
+   * Returns the datetime zone using which the final partition paths for hudi 
dataset are created.
+   * @return
+   */
+  DateTimeZone getOutputDateTimeZone();
+}
diff --git 
a/hudi-spark/src/main/java/org/apache/hudi/keygen/parser/HoodieDateTimeParserImpl.java
 
b/hudi-spark/src/main/java/org/apache/hudi/keygen/parser/HoodieDateTimeParserImpl.java
new file mode 100644
index 0000000..933e1af
--- /dev/null
+++ 
b/hudi-spark/src/main/java/org/apache/hudi/keygen/parser/HoodieDateTimeParserImpl.java
@@ -0,0 +1,122 @@
+/*
+ * 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.hudi.keygen.parser;
+
+import org.apache.hudi.DataSourceUtils;
+import org.apache.hudi.common.config.TypedProperties;
+import org.apache.hudi.keygen.TimestampBasedKeyGenerator.Config;
+import org.apache.hudi.keygen.TimestampBasedKeyGenerator.TimestampType;
+import org.joda.time.DateTimeZone;
+import org.joda.time.format.DateTimeFormat;
+import org.joda.time.format.DateTimeFormatter;
+import org.joda.time.format.DateTimeFormatterBuilder;
+import org.joda.time.format.DateTimeParser;
+
+import java.io.Serializable;
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.TimeZone;
+
+public class HoodieDateTimeParserImpl implements HoodieDateTimeParser, 
Serializable {
+
+  private String configInputDateFormatList;
+  private final String configInputDateFormatDelimiter;
+  private final TypedProperties config;
+  private DateTimeFormatter inputFormatter;
+
+  // TimeZone detailed settings reference
+  // https://docs.oracle.com/javase/8/docs/api/java/util/TimeZone.html
+  private final DateTimeZone inputDateTimeZone;
+
+  public HoodieDateTimeParserImpl(TypedProperties config) {
+    this.config = config;
+    DataSourceUtils.checkRequiredProperties(config, 
Arrays.asList(Config.TIMESTAMP_TYPE_FIELD_PROP, 
Config.TIMESTAMP_OUTPUT_DATE_FORMAT_PROP));
+    this.inputDateTimeZone = getInputDateTimeZone();
+    this.configInputDateFormatDelimiter = getConfigInputDateFormatDelimiter();
+
+    TimestampType timestampType = 
TimestampType.valueOf(config.getString(Config.TIMESTAMP_TYPE_FIELD_PROP));
+    if (timestampType == TimestampType.DATE_STRING || timestampType == 
TimestampType.MIXED) {
+      DataSourceUtils.checkRequiredProperties(config,
+          Collections.singletonList(Config.TIMESTAMP_INPUT_DATE_FORMAT_PROP));
+      this.configInputDateFormatList = 
config.getString(Config.TIMESTAMP_INPUT_DATE_FORMAT_PROP, "");
+      inputFormatter = getInputDateFormatter();
+    }
+  }
+
+  private String getConfigInputDateFormatDelimiter() {
+    String inputDateFormatDelimiter = 
config.getString(Config.TIMESTAMP_INPUT_DATE_FORMAT_LIST_DELIMITER_REGEX_PROP, 
",").trim();
+    inputDateFormatDelimiter = inputDateFormatDelimiter.isEmpty() ? "," : 
inputDateFormatDelimiter;
+    return inputDateFormatDelimiter;
+  }
+
+  private DateTimeFormatter getInputDateFormatter() {
+    if (this.configInputDateFormatList.isEmpty()) {
+      throw new 
IllegalArgumentException(Config.TIMESTAMP_INPUT_DATE_FORMAT_PROP + " 
configuration is required");
+    }
+
+    DateTimeFormatter formatter = new DateTimeFormatterBuilder()
+        .append(
+        null,
+        Arrays.stream(
+          
this.configInputDateFormatList.split(this.configInputDateFormatDelimiter))
+          .map(String::trim)
+          .map(DateTimeFormat::forPattern)
+          .map(DateTimeFormatter::getParser)
+          .toArray(DateTimeParser[]::new))
+        .toFormatter();
+    if (this.inputDateTimeZone != null) {
+      formatter = formatter.withZone(this.inputDateTimeZone);
+    } else {
+      formatter = formatter.withOffsetParsed();
+    }
+
+    return formatter;
+  }
+
+  @Override
+  public String getOutputDateFormat() {
+    return config.getString(Config.TIMESTAMP_OUTPUT_DATE_FORMAT_PROP);
+  }
+
+  @Override
+  public DateTimeFormatter getInputFormatter() {
+    return this.inputFormatter;
+  }
+
+  @Override
+  public DateTimeZone getInputDateTimeZone() {
+    String inputTimeZone;
+    if (config.containsKey(Config.TIMESTAMP_TIMEZONE_FORMAT_PROP)) {
+      inputTimeZone = config.getString(Config.TIMESTAMP_TIMEZONE_FORMAT_PROP, 
"GMT");
+    } else {
+      inputTimeZone = 
config.getString(Config.TIMESTAMP_INPUT_TIMEZONE_FORMAT_PROP, "");
+    }
+    return !inputTimeZone.trim().isEmpty() ? 
DateTimeZone.forTimeZone(TimeZone.getTimeZone(inputTimeZone)) : null;
+  }
+
+  @Override
+  public DateTimeZone getOutputDateTimeZone() {
+    String outputTimeZone;
+    if (config.containsKey(Config.TIMESTAMP_TIMEZONE_FORMAT_PROP)) {
+      outputTimeZone = config.getString(Config.TIMESTAMP_TIMEZONE_FORMAT_PROP, 
"GMT");
+    } else {
+      outputTimeZone = 
config.getString(Config.TIMESTAMP_OUTPUT_TIMEZONE_FORMAT_PROP, "");
+    }
+    return !outputTimeZone.trim().isEmpty() ? 
DateTimeZone.forTimeZone(TimeZone.getTimeZone(outputTimeZone)) : null;
+  }
+}
diff --git 
a/hudi-spark/src/test/java/org/apache/hudi/keygen/TestTimestampBasedKeyGenerator.java
 
b/hudi-spark/src/test/java/org/apache/hudi/keygen/TestTimestampBasedKeyGenerator.java
index bd8583f..b8e0d29 100644
--- 
a/hudi-spark/src/test/java/org/apache/hudi/keygen/TestTimestampBasedKeyGenerator.java
+++ 
b/hudi-spark/src/test/java/org/apache/hudi/keygen/TestTimestampBasedKeyGenerator.java
@@ -25,6 +25,8 @@ import org.apache.hudi.common.testutils.SchemaTestUtil;
 
 import org.apache.avro.Schema;
 import org.apache.avro.generic.GenericRecord;
+import org.apache.hudi.exception.HoodieDeltaStreamerException;
+import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.BeforeEach;
 import org.junit.jupiter.api.Test;
 
@@ -48,18 +50,41 @@ public class TestTimestampBasedKeyGenerator {
   }
 
   private TypedProperties getBaseKeyConfig(String timestampType, String 
dateFormat, String timezone, String scalarType) {
-    
properties.setProperty("hoodie.deltastreamer.keygen.timebased.timestamp.type", 
timestampType);
-    
properties.setProperty("hoodie.deltastreamer.keygen.timebased.output.dateformat",
 dateFormat);
-    properties.setProperty("hoodie.deltastreamer.keygen.timebased.timezone", 
timezone);
+    
properties.setProperty(TimestampBasedKeyGenerator.Config.TIMESTAMP_TYPE_FIELD_PROP,
 timestampType);
+    
properties.setProperty(TimestampBasedKeyGenerator.Config.TIMESTAMP_OUTPUT_DATE_FORMAT_PROP,
 dateFormat);
+    
properties.setProperty(TimestampBasedKeyGenerator.Config.TIMESTAMP_TIMEZONE_FORMAT_PROP,
 timezone);
 
     if (scalarType != null) {
       
properties.setProperty("hoodie.deltastreamer.keygen.timebased.timestamp.scalar.time.unit",
 scalarType);
     }
+
+    return properties;
+  }
+
+  private TypedProperties getBaseKeyConfig(String timestampType, String 
inputFormatList, String inputFormatDelimiterRegex, String inputTimezone, String 
outputFormat, String outputTimezone) {
+    if (timestampType != null) {
+      
properties.setProperty(TimestampBasedKeyGenerator.Config.TIMESTAMP_TYPE_FIELD_PROP,
 timestampType);
+    }
+    if (inputFormatList != null) {
+      
properties.setProperty(TimestampBasedKeyGenerator.Config.TIMESTAMP_INPUT_DATE_FORMAT_PROP,
 inputFormatList);
+    }
+    if (inputFormatDelimiterRegex != null) {
+      
properties.setProperty(TimestampBasedKeyGenerator.Config.TIMESTAMP_INPUT_DATE_FORMAT_LIST_DELIMITER_REGEX_PROP,
 inputFormatDelimiterRegex);
+    }
+    if (inputTimezone != null) {
+      
properties.setProperty(TimestampBasedKeyGenerator.Config.TIMESTAMP_INPUT_TIMEZONE_FORMAT_PROP,
 inputTimezone);
+    }
+    if (outputFormat != null) {
+      
properties.setProperty(TimestampBasedKeyGenerator.Config.TIMESTAMP_OUTPUT_DATE_FORMAT_PROP,
 outputFormat);
+    }
+    if (outputTimezone != null) {
+      
properties.setProperty(TimestampBasedKeyGenerator.Config.TIMESTAMP_OUTPUT_TIMEZONE_FORMAT_PROP,
 outputTimezone);
+    }
     return properties;
   }
 
   @Test
-  public void testTimestampBasedKeyGenerator() {
+  public void testTimestampBasedKeyGenerator() throws IOException {
     // timezone is GMT+8:00
     baseRecord.put("createTime", 1578283932000L);
     properties = getBaseKeyConfig("EPOCHMILLISECONDS", "yyyy-MM-dd hh", 
"GMT+8:00", null);
@@ -85,7 +110,7 @@ public class TestTimestampBasedKeyGenerator {
   }
 
   @Test
-  public void testScalar() {
+  public void testScalar() throws IOException {
     // timezone is GMT+8:00
     baseRecord.put("createTime", 20000L);
 
@@ -94,4 +119,137 @@ public class TestTimestampBasedKeyGenerator {
     HoodieKey hk5 = new 
TimestampBasedKeyGenerator(properties).getKey(baseRecord);
     assertEquals(hk5.getPartitionPath(), "2024-10-04 12");
   }
-}
+
+  @Test
+  public void 
test_ExpectsMatch_SingleInputFormat_ISO8601WithMsZ_OutputTimezoneAsUTC() throws 
IOException {
+    baseRecord.put("createTime", "2020-04-01T13:01:33.428Z");
+    properties = this.getBaseKeyConfig(
+      "DATE_STRING",
+      "yyyy-MM-dd'T'HH:mm:ss.SSSZ",
+      "",
+      "",
+      "yyyyMMddHH",
+      "GMT");
+    HoodieKey hk1 = new 
TimestampBasedKeyGenerator(properties).getKey(baseRecord);
+
+    Assertions.assertEquals("2020040113", hk1.getPartitionPath());
+  }
+
+  @Test
+  public void 
test_ExpectsMatch_SingleInputFormats_ISO8601WithMsZ_OutputTimezoneAsInputDateTimeZone()
 throws IOException {
+    baseRecord.put("createTime", "2020-04-01T13:01:33.428Z");
+    properties = this.getBaseKeyConfig(
+      "DATE_STRING",
+      "yyyy-MM-dd'T'HH:mm:ss.SSSZ",
+      "",
+      "",
+      "yyyyMMddHH",
+      "");
+    HoodieKey hk1 = new 
TimestampBasedKeyGenerator(properties).getKey(baseRecord);
+
+    Assertions.assertEquals("2020040113", hk1.getPartitionPath());
+  }
+
+  @Test
+  public void 
test_ExpectsMatch_MultipleInputFormats_ISO8601WithMsZ_OutputTimezoneAsUTC() 
throws IOException {
+    baseRecord.put("createTime", "2020-04-01T13:01:33.428Z");
+    properties = this.getBaseKeyConfig(
+      "DATE_STRING",
+      "yyyy-MM-dd'T'HH:mm:ssZ,yyyy-MM-dd'T'HH:mm:ss.SSSZ",
+      "",
+      "",
+      "yyyyMMddHH",
+      "UTC");
+    HoodieKey hk1 = new 
TimestampBasedKeyGenerator(properties).getKey(baseRecord);
+
+    Assertions.assertEquals("2020040113", hk1.getPartitionPath());
+  }
+
+  @Test
+  public void 
test_ExpectsMatch_MultipleInputFormats_ISO8601NoMsZ_OutputTimezoneAsUTC() 
throws IOException {
+    baseRecord.put("createTime", "2020-04-01T13:01:33Z");
+    properties = this.getBaseKeyConfig(
+      "DATE_STRING",
+      "yyyy-MM-dd'T'HH:mm:ssZ,yyyy-MM-dd'T'HH:mm:ss.SSSZ",
+      "",
+      "",
+      "yyyyMMddHH",
+      "UTC");
+    HoodieKey hk1 = new 
TimestampBasedKeyGenerator(properties).getKey(baseRecord);
+
+    Assertions.assertEquals("2020040113", hk1.getPartitionPath());
+  }
+
+  @Test
+  public void 
test_ExpectsMatch_MultipleInputFormats_ISO8601NoMsWithOffset_OutputTimezoneAsUTC()
 throws IOException {
+    baseRecord.put("createTime", "2020-04-01T13:01:33-05:00");
+    properties = this.getBaseKeyConfig(
+      "DATE_STRING",
+      "yyyy-MM-dd'T'HH:mm:ssZ,yyyy-MM-dd'T'HH:mm:ss.SSSZ",
+      "",
+      "",
+      "yyyyMMddHH",
+      "UTC");
+    HoodieKey hk1 = new 
TimestampBasedKeyGenerator(properties).getKey(baseRecord);
+
+    Assertions.assertEquals("2020040118", hk1.getPartitionPath());
+  }
+
+  @Test
+  public void 
test_ExpectsMatch_MultipleInputFormats_ISO8601WithMsWithOffset_OutputTimezoneAsUTC()
 throws IOException {
+    baseRecord.put("createTime", "2020-04-01T13:01:33.123-05:00");
+    properties = this.getBaseKeyConfig(
+      "DATE_STRING",
+      "yyyy-MM-dd'T'HH:mm:ssZ,yyyy-MM-dd'T'HH:mm:ss.SSSZ",
+      "",
+      "",
+      "yyyyMMddHH",
+      "UTC");
+    HoodieKey hk1 = new 
TimestampBasedKeyGenerator(properties).getKey(baseRecord);
+
+    Assertions.assertEquals("2020040118", hk1.getPartitionPath());
+  }
+
+  @Test
+  public void 
test_ExpectsMatch_MultipleInputFormats_ISO8601WithMsZ_OutputTimezoneAsEST() 
throws IOException {
+    baseRecord.put("createTime", "2020-04-01T13:01:33.123Z");
+    properties = this.getBaseKeyConfig(
+      "DATE_STRING",
+      "yyyy-MM-dd'T'HH:mm:ssZ,yyyy-MM-dd'T'HH:mm:ss.SSSZ",
+      "",
+      "",
+      "yyyyMMddHH",
+      "EST");
+    HoodieKey hk1 = new 
TimestampBasedKeyGenerator(properties).getKey(baseRecord);
+
+    Assertions.assertEquals("2020040109", hk1.getPartitionPath());
+  }
+
+  @Test
+  public void test_Throws_MultipleInputFormats_InputDateNotMatchingFormats() {
+    baseRecord.put("createTime", "2020-04-01 13:01:33.123-05:00");
+    properties = this.getBaseKeyConfig(
+      "DATE_STRING",
+      "yyyy-MM-dd'T'HH:mm:ssZ,yyyy-MM-dd'T'HH:mm:ss.SSSZ",
+      "",
+      "",
+      "yyyyMMddHH",
+      "UTC");
+    Assertions.assertThrows(HoodieDeltaStreamerException.class, () -> new 
TimestampBasedKeyGenerator(properties).getKey(baseRecord));
+  }
+
+  @Test
+  public void 
test_ExpectsMatch_MultipleInputFormats_ShortDate_OutputCustomDate() throws 
IOException {
+    baseRecord.put("createTime", "20200401");
+    properties = this.getBaseKeyConfig(
+      "DATE_STRING",
+      "yyyy-MM-dd'T'HH:mm:ssZ,yyyy-MM-dd'T'HH:mm:ss.SSSZ,yyyyMMdd",
+      "",
+      "UTC",
+      "MM/dd/yyyy",
+      "UTC");
+    HoodieKey hk1 = new 
TimestampBasedKeyGenerator(properties).getKey(baseRecord);
+
+    Assertions.assertEquals("04/01/2020", hk1.getPartitionPath());
+  }
+}
\ No newline at end of file
diff --git 
a/hudi-utilities/src/main/java/org/apache/hudi/utilities/UtilHelpers.java 
b/hudi-utilities/src/main/java/org/apache/hudi/utilities/UtilHelpers.java
index fa261d4..64b0238 100644
--- a/hudi-utilities/src/main/java/org/apache/hudi/utilities/UtilHelpers.java
+++ b/hudi-utilities/src/main/java/org/apache/hudi/utilities/UtilHelpers.java
@@ -60,7 +60,6 @@ import org.apache.spark.sql.types.StructType;
 
 import java.io.BufferedReader;
 import java.io.IOException;
-import java.io.InputStream;
 import java.io.StringReader;
 import java.nio.ByteBuffer;
 import java.sql.Connection;
@@ -267,12 +266,6 @@ public class UtilHelpers {
     return -1;
   }
 
-  public static TypedProperties readConfig(InputStream in) throws IOException {
-    TypedProperties defaults = new TypedProperties();
-    defaults.load(in);
-    return defaults;
-  }
-
   /**
    * Returns a factory for creating connections to the given JDBC URL.
    *

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