[GitHub] [hudi] nsivabalan commented on a change in pull request #2993: [HUDI-1929] Make HoodieDeltaStreamer support configure KeyGenerator by type

2021-06-02 Thread GitBox


nsivabalan commented on a change in pull request #2993:
URL: https://github.com/apache/hudi/pull/2993#discussion_r643861744



##
File path: 
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/keygen/constant/KeyGeneratorType.java
##
@@ -0,0 +1,55 @@
+/*
+ * 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.constant;
+
+/**
+ * Types of {@link org.apache.hudi.keygen.KeyGenerator}.
+ */
+public enum KeyGeneratorType {
+  /**
+   * Simple key generator, which takes names of fields to be used for 
recordKey and partitionPath as configs.
+   */
+  SIMPLE,
+
+  /**
+   * Complex key generator, which takes names of fields to be used for 
recordKey and partitionPath as configs.
+   */
+  COMPLEX,
+
+  /**
+   * Key generator, that relies on timestamps for partitioning field. Still 
picks record key by name.
+   */
+  TIMESTAMP,
+
+  /**
+   * A generic implementation of KeyGenerator where users can configure record 
key as a single field or a combination

Review comment:
   Can we please add an example for custom key gen type. users might 
confuse between complex and custom. 




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[GitHub] [hudi] nsivabalan commented on a change in pull request #2993: [HUDI-1929] Make HoodieDeltaStreamer support configure KeyGenerator by type

2021-06-02 Thread GitBox


nsivabalan commented on a change in pull request #2993:
URL: https://github.com/apache/hudi/pull/2993#discussion_r643863514



##
File path: 
hudi-client/hudi-spark-client/src/test/java/org/apache/hudi/keygen/TestCustomKeyGenerator.java
##
@@ -98,53 +103,145 @@ private TypedProperties 
getPropertiesForNonPartitionedKeyGen() {
   }
 
   @Test
-  public void testSimpleKeyGenerator() {
-BuiltinKeyGenerator keyGenerator = new 
CustomKeyGenerator(getPropertiesForSimpleKeyGen());
+  public void testSimpleKeyGenerator() throws IOException {
+TypedProperties propertiesForSimpleKeyGen = getPropertiesForSimpleKeyGen();
+
+// Test config with HoodieWriteConfig.KEYGENERATOR_CLASS_PROP
+propertiesForSimpleKeyGen.put(HoodieWriteConfig.KEYGENERATOR_CLASS_PROP, 
CustomKeyGenerator.class.getName());
+
+BuiltinKeyGenerator keyGenerator = 
HoodieSparkKeyGeneratorFactory.createKeyGenerator(propertiesForSimpleKeyGen);
 GenericRecord record = getRecord();
 HoodieKey key = keyGenerator.getKey(record);
 Assertions.assertEquals(key.getRecordKey(), "key1");
 Assertions.assertEquals(key.getPartitionPath(), "timestamp=4357686");
 Row row = KeyGeneratorTestUtilities.getRow(record);
 Assertions.assertEquals(keyGenerator.getRecordKey(row), "key1");
 Assertions.assertEquals(keyGenerator.getPartitionPath(row), 
"timestamp=4357686");
+
+// Test config with HoodieWriteConfig.KEYGENERATOR_TYPE_PROP
+propertiesForSimpleKeyGen = getPropertiesForSimpleKeyGen();
+propertiesForSimpleKeyGen.put(HoodieWriteConfig.KEYGENERATOR_TYPE_PROP, 
KeyGeneratorType.CUSTOM.name());
+
+keyGenerator = 
HoodieSparkKeyGeneratorFactory.createKeyGenerator(propertiesForSimpleKeyGen);

Review comment:
   we could trying moving this repetitive code to a common private method 
and re-use them. I mean lines 125 to 132. Similarly for all key types. 

##
File path: 
hudi-client/hudi-spark-client/src/test/java/org/apache/hudi/keygen/TestCustomKeyGenerator.java
##
@@ -98,53 +103,145 @@ private TypedProperties 
getPropertiesForNonPartitionedKeyGen() {
   }
 
   @Test
-  public void testSimpleKeyGenerator() {
-BuiltinKeyGenerator keyGenerator = new 
CustomKeyGenerator(getPropertiesForSimpleKeyGen());
+  public void testSimpleKeyGenerator() throws IOException {
+TypedProperties propertiesForSimpleKeyGen = getPropertiesForSimpleKeyGen();
+
+// Test config with HoodieWriteConfig.KEYGENERATOR_CLASS_PROP
+propertiesForSimpleKeyGen.put(HoodieWriteConfig.KEYGENERATOR_CLASS_PROP, 
CustomKeyGenerator.class.getName());
+
+BuiltinKeyGenerator keyGenerator = 
HoodieSparkKeyGeneratorFactory.createKeyGenerator(propertiesForSimpleKeyGen);
 GenericRecord record = getRecord();
 HoodieKey key = keyGenerator.getKey(record);
 Assertions.assertEquals(key.getRecordKey(), "key1");
 Assertions.assertEquals(key.getPartitionPath(), "timestamp=4357686");
 Row row = KeyGeneratorTestUtilities.getRow(record);
 Assertions.assertEquals(keyGenerator.getRecordKey(row), "key1");
 Assertions.assertEquals(keyGenerator.getPartitionPath(row), 
"timestamp=4357686");
+
+// Test config with HoodieWriteConfig.KEYGENERATOR_TYPE_PROP
+propertiesForSimpleKeyGen = getPropertiesForSimpleKeyGen();
+propertiesForSimpleKeyGen.put(HoodieWriteConfig.KEYGENERATOR_TYPE_PROP, 
KeyGeneratorType.CUSTOM.name());
+
+keyGenerator = 
HoodieSparkKeyGeneratorFactory.createKeyGenerator(propertiesForSimpleKeyGen);

Review comment:
   or better option would be to go with Parameterized tests. 

##
File path: 
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/keygen/constant/KeyGeneratorType.java
##
@@ -0,0 +1,55 @@
+/*
+ * 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.constant;
+
+/**
+ * Types of {@link org.apache.hudi.keygen.KeyGenerator}.
+ */
+public enum KeyGeneratorType {
+  /**
+   * Simple key generator, which takes names of fields to be used for 
recordKey and partitionPath as configs.
+   */
+  SIMPLE,
+
+  /**
+   * Complex key generator, which takes names of fields to be used for 
recordKey and partitionPath as configs.
+   */
+  COMPLEX,
+
+  /**
+ 

[GitHub] [hudi] nsivabalan commented on a change in pull request #2993: [HUDI-1929] Make HoodieDeltaStreamer support configure KeyGenerator by type

2021-05-31 Thread GitBox


nsivabalan commented on a change in pull request #2993:
URL: https://github.com/apache/hudi/pull/2993#discussion_r642503029



##
File path: 
hudi-client/hudi-spark-client/src/test/java/org/apache/hudi/keygen/TestCustomKeyGenerator.java
##
@@ -98,8 +105,9 @@ private TypedProperties 
getPropertiesForNonPartitionedKeyGen() {
   }
 
   @Test
-  public void testSimpleKeyGenerator() {
-BuiltinKeyGenerator keyGenerator = new 
CustomKeyGenerator(getPropertiesForSimpleKeyGen());
+  public void testSimpleKeyGenerator() throws IOException {

Review comment:
   Can you run every tests twice. once with prop config and once with class 
config. 




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[GitHub] [hudi] nsivabalan commented on a change in pull request #2993: [HUDI-1929] Make HoodieDeltaStreamer support configure KeyGenerator by type

2021-05-31 Thread GitBox


nsivabalan commented on a change in pull request #2993:
URL: https://github.com/apache/hudi/pull/2993#discussion_r642498863



##
File path: 
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/config/HoodieWriteConfig.java
##
@@ -72,8 +71,11 @@
   public static final String PRECOMBINE_FIELD_PROP = 
"hoodie.datasource.write.precombine.field";
   public static final String WRITE_PAYLOAD_CLASS = 
"hoodie.datasource.write.payload.class";
   public static final String DEFAULT_WRITE_PAYLOAD_CLASS = 
OverwriteWithLatestAvroPayload.class.getName();
+
   public static final String KEYGENERATOR_CLASS_PROP = 
"hoodie.datasource.write.keygenerator.class";
-  public static final String DEFAULT_KEYGENERATOR_CLASS = 
SimpleAvroKeyGenerator.class.getName();
+  public static final String KEYGENERATOR_TYPE_PROP = 
"hoodie.datasource.write.keygenerator.type";
+  public static final String DEFAULT_KEYGENERATOR_TYPE = "simple";

Review comment:
   makes sense. thanks for clarifying.




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[GitHub] [hudi] nsivabalan commented on a change in pull request #2993: [HUDI-1929] Make HoodieDeltaStreamer support configure KeyGenerator by type

2021-05-30 Thread GitBox


nsivabalan commented on a change in pull request #2993:
URL: https://github.com/apache/hudi/pull/2993#discussion_r642184643



##
File path: 
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/config/HoodieWriteConfig.java
##
@@ -72,8 +71,11 @@
   public static final String PRECOMBINE_FIELD_PROP = 
"hoodie.datasource.write.precombine.field";
   public static final String WRITE_PAYLOAD_CLASS = 
"hoodie.datasource.write.payload.class";
   public static final String DEFAULT_WRITE_PAYLOAD_CLASS = 
OverwriteWithLatestAvroPayload.class.getName();
+
   public static final String KEYGENERATOR_CLASS_PROP = 
"hoodie.datasource.write.keygenerator.class";
-  public static final String DEFAULT_KEYGENERATOR_CLASS = 
SimpleAvroKeyGenerator.class.getName();
+  public static final String KEYGENERATOR_TYPE_PROP = 
"hoodie.datasource.write.keygenerator.type";
+  public static final String DEFAULT_KEYGENERATOR_TYPE = "simple";

Review comment:
   oops, missed something. you can't deprecate the old config. user defined 
key gen will be derived from the same config. 
   So, what we could do is that. 
   check if KEYGENERATOR_TYPE_PROP is set. // there is no default for 
KEYGENERATOR_TYPE_PROP
   else use value from KEYGENERATOR_CLASS_PROP.
   KEYGENERATOR_CLASS_PROP can have a default of SIMPLE key gen.
   Let me know if this would work.
   




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[GitHub] [hudi] nsivabalan commented on a change in pull request #2993: [HUDI-1929] Make HoodieDeltaStreamer support configure KeyGenerator by type

2021-05-29 Thread GitBox


nsivabalan commented on a change in pull request #2993:
URL: https://github.com/apache/hudi/pull/2993#discussion_r641931702



##
File path: 
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/config/HoodieWriteConfig.java
##
@@ -72,8 +71,11 @@
   public static final String PRECOMBINE_FIELD_PROP = 
"hoodie.datasource.write.precombine.field";
   public static final String WRITE_PAYLOAD_CLASS = 
"hoodie.datasource.write.payload.class";
   public static final String DEFAULT_WRITE_PAYLOAD_CLASS = 
OverwriteWithLatestAvroPayload.class.getName();
+
   public static final String KEYGENERATOR_CLASS_PROP = 
"hoodie.datasource.write.keygenerator.class";
-  public static final String DEFAULT_KEYGENERATOR_CLASS = 
SimpleAvroKeyGenerator.class.getName();
+  public static final String KEYGENERATOR_TYPE_PROP = 
"hoodie.datasource.write.keygenerator.type";
+  public static final String DEFAULT_KEYGENERATOR_TYPE = "simple";

Review comment:
   I would propose to may be deprecate the old config. and convert the old 
one to new one (within parametersWithWriteDefaults or somewhere). Let's not 
have two conflicting configs. 




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[GitHub] [hudi] nsivabalan commented on a change in pull request #2993: [HUDI-1929] Make HoodieDeltaStreamer support configure KeyGenerator by type

2021-05-29 Thread GitBox


nsivabalan commented on a change in pull request #2993:
URL: https://github.com/apache/hudi/pull/2993#discussion_r641931227



##
File path: 
hudi-client/hudi-client-common/src/main/java/org/apache/hudi/config/HoodieWriteConfig.java
##
@@ -72,8 +71,11 @@
   public static final String PRECOMBINE_FIELD_PROP = 
"hoodie.datasource.write.precombine.field";
   public static final String WRITE_PAYLOAD_CLASS = 
"hoodie.datasource.write.payload.class";
   public static final String DEFAULT_WRITE_PAYLOAD_CLASS = 
OverwriteWithLatestAvroPayload.class.getName();
+
   public static final String KEYGENERATOR_CLASS_PROP = 
"hoodie.datasource.write.keygenerator.class";
-  public static final String DEFAULT_KEYGENERATOR_CLASS = 
SimpleAvroKeyGenerator.class.getName();
+  public static final String KEYGENERATOR_TYPE_PROP = 
"hoodie.datasource.write.keygenerator.type";
+  public static final String DEFAULT_KEYGENERATOR_TYPE = "simple";

Review comment:
   Can you set Default as KeyGeneratorType.SIMPLE.name() rather than 
hardcoding. also, lets standardize if we need to lowercase or leave it as is. 
   @n3nash : is there any guideline in general wrt using enums as vals in 
configs. do we lower case it or expect users to set enum vals as is(UPPERCASE) 
? 
   




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