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https://issues.apache.org/jira/browse/GOBBLIN-1485?focusedWorklogId=616162&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-616162
]
ASF GitHub Bot logged work on GOBBLIN-1485:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 29/Jun/21 13:19
Start Date: 29/Jun/21 13:19
Worklog Time Spent: 10m
Work Description: sv2000 commented on a change in pull request #3324:
URL: https://github.com/apache/gobblin/pull/3324#discussion_r660136783
##########
File path:
gobblin-hive-registration/src/main/java/org/apache/gobblin/hive/HiveRegistrationUnitComparator.java
##########
@@ -142,12 +145,24 @@ public T compareIsStoredAsSubDirs() {
return (T) this;
}
+ private State extractSchemaVersion(State state) {
+ State newState = new State(state);
+ String schemaFromState =
state.getProp(AvroSerdeUtils.AvroTableProperties.SCHEMA_LITERAL.getPropName());
+ if (schemaFromState != null && !schemaFromState.isEmpty()) {
+ String schemaVersion = AvroUtils.getSchemaCreationTime(new
Schema.Parser().parse(schemaFromState));
+ if (schemaVersion != null && !schemaVersion.isEmpty()) {
+
newState.removeProp(AvroSerdeUtils.AvroTableProperties.SCHEMA_LITERAL.getPropName());
Review comment:
Why do we remove this property?
##########
File path:
gobblin-hive-registration/src/main/java/org/apache/gobblin/hive/HiveRegistrationUnitComparator.java
##########
@@ -142,12 +145,24 @@ public T compareIsStoredAsSubDirs() {
return (T) this;
}
+ private State extractSchemaVersion(State state) {
+ State newState = new State(state);
+ String schemaFromState =
state.getProp(AvroSerdeUtils.AvroTableProperties.SCHEMA_LITERAL.getPropName());
+ if (schemaFromState != null && !schemaFromState.isEmpty()) {
Review comment:
can be re-written using Strings.isNullOrEmpty()
##########
File path:
gobblin-hive-registration/src/main/java/org/apache/gobblin/hive/orc/HiveOrcSerDeManager.java
##########
@@ -75,12 +78,17 @@
public static final String DEFAULT_SERDE_TYPE = "ORC";
public static final String INPUT_FORMAT_CLASS_KEY =
"hiveOrcSerdeManager.inputFormatClass";
public static final String DEFAULT_INPUT_FORMAT_CLASS =
OrcInputFormat.class.getName();
+ public static final String WRITER_LATEST_SCHEMA = "writer.latest.schema";
public static final String OUTPUT_FORMAT_CLASS_KEY =
"hiveOrcSerdeManager.outputFormatClass";
public static final String DEFAULT_OUTPUT_FORMAT_CLASS =
OrcOutputFormat.class.getName();
public static final String HIVE_SPEC_SCHEMA_READING_TIMER =
"hiveOrcSerdeManager.schemaReadTimer";
+ public static final String HIVE_SPEC_SCHEMA_FROM_WRITER =
"hiveOrcSerdeManager.getSchemaFromWriterSchema";
Review comment:
Do we need to introduce a config? Can we always look for writer schema
first and then default to file schema if it doesn't exist?
##########
File path:
gobblin-hive-registration/src/main/java/org/apache/gobblin/hive/HiveRegistrationUnitComparator.java
##########
@@ -142,12 +145,24 @@ public T compareIsStoredAsSubDirs() {
return (T) this;
}
+ private State extractSchemaVersion(State state) {
+ State newState = new State(state);
+ String schemaFromState =
state.getProp(AvroSerdeUtils.AvroTableProperties.SCHEMA_LITERAL.getPropName());
+ if (schemaFromState != null && !schemaFromState.isEmpty()) {
+ String schemaVersion = AvroUtils.getSchemaCreationTime(new
Schema.Parser().parse(schemaFromState));
+ if (schemaVersion != null && !schemaVersion.isEmpty()) {
Review comment:
can we re-written using Strings.isNullOrEmpty().
##########
File path:
gobblin-hive-registration/src/main/java/org/apache/gobblin/hive/orc/HiveOrcSerDeManager.java
##########
@@ -264,7 +272,18 @@ private void addSchemaProperties(Path path,
HiveRegistrationUnit hiveUnit)
*
*/
protected void addSchemaPropertiesHelper(Path path, HiveRegistrationUnit
hiveUnit) throws IOException {
- TypeInfo schema = getSchemaFromLatestFile(path, this.fs);
+ TypeInfo schema;
+ if(props.getPropAsBoolean(HIVE_SPEC_SCHEMA_FROM_WRITER,
DEFAULT_HIVE_SPEC_SCHEMA_FROM_WRITER)) {
+ try {
+ Preconditions.checkArgument(props.contains(WRITER_LATEST_SCHEMA));
+ Schema avroSchema = new
Schema.Parser().parse(props.getProp(WRITER_LATEST_SCHEMA));
+ schema = TypeInfoUtils.getTypeInfoFromObjectInspector(new
AvroObjectInspectorGenerator(avroSchema).getObjectInspector());
Review comment:
The schema converter returns a TypeDescription object. Not sure if it is
easy to go from TypeDescription to TypeInfo.
##########
File path:
gobblin-hive-registration/src/main/java/org/apache/gobblin/hive/orc/HiveOrcSerDeManager.java
##########
@@ -264,7 +272,18 @@ private void addSchemaProperties(Path path,
HiveRegistrationUnit hiveUnit)
*
*/
protected void addSchemaPropertiesHelper(Path path, HiveRegistrationUnit
hiveUnit) throws IOException {
- TypeInfo schema = getSchemaFromLatestFile(path, this.fs);
+ TypeInfo schema;
+ if(props.getPropAsBoolean(HIVE_SPEC_SCHEMA_FROM_WRITER,
DEFAULT_HIVE_SPEC_SCHEMA_FROM_WRITER)) {
+ try {
+ Preconditions.checkArgument(props.contains(WRITER_LATEST_SCHEMA));
+ Schema avroSchema = new
Schema.Parser().parse(props.getProp(WRITER_LATEST_SCHEMA));
+ schema = TypeInfoUtils.getTypeInfoFromObjectInspector(new
AvroObjectInspectorGenerator(avroSchema).getObjectInspector());
Review comment:
There is a Avro->Orc schema converter utility method in
AvroOrcSchemaConverter class. Can we use that, given that it is being used by
GobblinOrcWriter to create the ORC file?
##########
File path:
gobblin-hive-registration/src/main/java/org/apache/gobblin/hive/orc/HiveOrcSerDeManager.java
##########
@@ -75,12 +78,17 @@
public static final String DEFAULT_SERDE_TYPE = "ORC";
public static final String INPUT_FORMAT_CLASS_KEY =
"hiveOrcSerdeManager.inputFormatClass";
public static final String DEFAULT_INPUT_FORMAT_CLASS =
OrcInputFormat.class.getName();
+ public static final String WRITER_LATEST_SCHEMA = "writer.latest.schema";
public static final String OUTPUT_FORMAT_CLASS_KEY =
"hiveOrcSerdeManager.outputFormatClass";
public static final String DEFAULT_OUTPUT_FORMAT_CLASS =
OrcOutputFormat.class.getName();
public static final String HIVE_SPEC_SCHEMA_READING_TIMER =
"hiveOrcSerdeManager.schemaReadTimer";
+ public static final String HIVE_SPEC_SCHEMA_FROM_WRITER =
"hiveOrcSerdeManager.getSchemaFromWriterSchema";
Review comment:
I see. We should probably not overload the writer schema configuration
to mean different things in different scenarios. We can introduce a separate
configuration for the GMCE use case. Thoughts?
##########
File path:
gobblin-hive-registration/src/main/java/org/apache/gobblin/hive/HiveRegistrationUnitComparator.java
##########
@@ -142,12 +146,24 @@ public T compareIsStoredAsSubDirs() {
return (T) this;
}
+ private State extractSchemaVersion(State state) {
+ State newState = new State(state);
+ String schemaFromState =
state.getProp(AvroSerdeUtils.AvroTableProperties.SCHEMA_LITERAL.getPropName());
+ if (!Strings.isNullOrEmpty(schemaFromState)) {
+ String schemaVersion = AvroUtils.getSchemaCreationTime(new
Schema.Parser().parse(schemaFromState));
+ if (!Strings.isNullOrEmpty(schemaVersion)) {
+
newState.removeProp(AvroSerdeUtils.AvroTableProperties.SCHEMA_LITERAL.getPropName());
+ newState.setProp("schema.creationTime", schemaVersion);
Review comment:
Can we define a static variable for this property?
##########
File path:
gobblin-hive-registration/src/main/java/org/apache/gobblin/hive/orc/HiveOrcSerDeManager.java
##########
@@ -264,7 +272,18 @@ private void addSchemaProperties(Path path,
HiveRegistrationUnit hiveUnit)
*
*/
protected void addSchemaPropertiesHelper(Path path, HiveRegistrationUnit
hiveUnit) throws IOException {
- TypeInfo schema = getSchemaFromLatestFile(path, this.fs);
+ TypeInfo schema;
+ if(props.getPropAsBoolean(HIVE_SPEC_SCHEMA_FROM_WRITER,
DEFAULT_HIVE_SPEC_SCHEMA_FROM_WRITER)) {
+ try {
+ Preconditions.checkArgument(props.contains(WRITER_LATEST_SCHEMA));
+ Schema avroSchema = new
Schema.Parser().parse(props.getProp(WRITER_LATEST_SCHEMA));
+ schema = TypeInfoUtils.getTypeInfoFromObjectInspector(new
AvroObjectInspectorGenerator(avroSchema).getObjectInspector());
Review comment:
Makes sense. Thanks for the explanation!
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Issue Time Tracking
-------------------
Worklog Id: (was: 616162)
Time Spent: 2h 50m (was: 2h 40m)
> Enable feature to get schema from writer schema when do hive registration
> -------------------------------------------------------------------------
>
> Key: GOBBLIN-1485
> URL: https://issues.apache.org/jira/browse/GOBBLIN-1485
> Project: Apache Gobblin
> Issue Type: New Feature
> Reporter: Zihan Li
> Priority: Major
> Time Spent: 2h 50m
> Remaining Estimate: 0h
>
> Enable feature to get schema from writer schema when do hive registration, so
> that we can avoid list operations to get the latest schema
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