Details
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Bug
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
Description
Background
Hudi-Flink is using Avro 1.10.0, while the rest (or rather, most) of the other Hudi-* modules are using Avro 1.8.2.
Avro introduced a few changes after version 1.8.2. One of which is the introduction of anonymous classes in JsonProperties.java (org.apache.avro.JsonProperties#props). The field props is implemented via anonymous inner classes, causing issues when performing deSerialization.
The error (in the stacktrace) can be triggered if a table with a precombineField of type DECIMAL(p, s) is written into the BitCaskDiskMap when performing a compaction or when merge is required and the SpillableDiskMap is required to write values in/onto the *DiskMap.
Same issue is met by other Apache projects
More details can be found in this Apache's Jira issue here: AVRO-3438
Spark has also encountered this issue: SPARK-34477
A workaround for this is to copy Spark's implementation of GenericAvroSerializer over (and simplify it a little).
Minimal example (Flink-SQL + Streaming mode)
A minimal Flink-SQL snippet to trigger this issue under STREAMING MODE:
CREATE TEMPORARY TABLE src_table ( id bigint, full_name ROW<first_name STRING, last_name STRING>, country string, age INT, update_time decimal(20,0) ) WITH ( 'connector' = 'datagen', 'rows-per-second' = '50', 'fields.age.min' = '0', 'fields.age.max' = '2', 'fields.country.length' = '1' );-- Hudi table to write to CREATE TEMPORARY TABLE dst_table ( id bigint, full_name ROW<first_name STRING, last_name STRING>, country string, age INT, update_time decimal(20,0) ) PARTITIONED BY (age) WITH ( -- Hudi settings 'connector' = 'hudi', 'hoodie.datasource.write.recordkey.field' = 'id', 'path' = 'hdfs://path/to/dst_table', 'write.operation' = 'upsert', -- 'write.operation' = 'upsert', 'table.type' = 'MERGE_ON_READ', 'hoodie.table.keygenerator.class' = 'org.apache.hudi.keygen.ComplexAvroKeyGenerator', 'write.precombine.field' = 'update_time', 'index.type' = 'BUCKET', 'hoodie.bucket.index.num.buckets' = '4', 'hoodie.bucket.index.hash.field' = 'id', 'compaction.max_memory' = '0', -- ensure that all records are spilled to disk -- Hive sync settings 'hive_sync.enable' = 'false' );-- Insert into Hudi sink INSERT INTO dst_table SELECT id, full_name, country, age, update_time FROM src_table;
Minimal example (Unit test)
To reproduce this error, create this test under the directory:
hudi-flink-datasource/hudi-flink/src/test/java/org/apache/hudi/sink/utils/TestBitCaskDiskMapFromFlink.java
package org.apache.hudi.sink.utils; import java.io.IOException; import org.apache.avro.LogicalTypes; import org.apache.avro.Schema; import org.apache.avro.generic.GenericData; import org.apache.avro.generic.GenericFixed; import org.apache.hudi.common.model.EventTimeAvroPayload; import org.apache.hudi.common.model.HoodieAvroRecord; import org.apache.hudi.common.model.HoodieKey; import org.apache.hudi.common.model.HoodieRecord; import org.apache.hudi.common.testutils.HoodieCommonTestHarness; import org.apache.hudi.common.util.collection.BitCaskDiskMap; import org.junit.jupiter.api.Test; public class TestBitCaskDiskMapFromFlink extends HoodieCommonTestHarness { @Test public void testPutDecimal() throws IOException { // the avro version used by hudi-flink module is 1.10.0 // placing the test here will use avro 1.10.0, allowing the error caused by anonymous classes to be thrown BitCaskDiskMap<String, HoodieRecord> records = new BitCaskDiskMap<>(basePath, true); Schema precombineFieldSchema = LogicalTypes.decimal(20, 0) .addToSchema(Schema.createFixed("fixed", null, "record.precombineField", 9)); byte[] decimalFieldBytes = new byte[] {0, 0, 0, 1, -122, -16, -116, -90, -32}; GenericFixed genericFixed = new GenericData.Fixed(precombineFieldSchema, decimalFieldBytes); HoodieRecord avroRecord = new HoodieAvroRecord<>(new HoodieKey("recordKey", "partitionPath"), new EventTimeAvroPayload(null, (Comparable) genericFixed)); records.put("a", avroRecord); records.get("a"); } }
Stacktrace
Stacktrace for the error:
com.esotericsoftware.kryo.KryoException: java.lang.NullPointerException
Serialization trace:
props (org.apache.avro.Schema$FixedSchema)
schema (org.apache.avro.generic.GenericData$Fixed)
orderingVal (org.apache.hudi.common.model.EventTimeAvroPayload)
data (org.apache.hudi.common.model.HoodieAvroRecord) at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:144)
at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:543)
at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:731)
at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:543)
at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:731)
at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:543)
at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:731)
at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
at com.esotericsoftware.kryo.serializers.FieldSerializer.read(FieldSerializer.java:543)
at com.esotericsoftware.kryo.Kryo.readClassAndObject(Kryo.java:813)
at org.apache.hudi.common.util.SerializationUtils$KryoSerializerInstance.deserialize(SerializationUtils.java:106)
at org.apache.hudi.common.util.SerializationUtils.deserialize(SerializationUtils.java:80)
at org.apache.hudi.common.util.collection.BitCaskDiskMap.get(BitCaskDiskMap.java:210)
at org.apache.hudi.common.util.collection.BitCaskDiskMap.get(BitCaskDiskMap.java:203)
at org.apache.hudi.common.util.collection.BitCaskDiskMap.get(BitCaskDiskMap.java:199)
at org.apache.hudi.sink.utils.TestBitCaskDiskMapFromFlink.testPutDecimal(TestBitCaskDiskMapFromFlink.java:51)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:688)
at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:210)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:206)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:131)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:65)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84)
at java.util.ArrayList.forEach(ArrayList.java:1259)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:75)
at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57)
at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
Caused by: java.lang.NullPointerException
at org.apache.avro.JsonProperties$2.putIfAbsent(JsonProperties.java:159)
at org.apache.avro.JsonProperties$2.put(JsonProperties.java:166)
at org.apache.avro.JsonProperties$2.put(JsonProperties.java:151)
at com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:162)
at com.esotericsoftware.kryo.serializers.MapSerializer.read(MapSerializer.java:39)
at com.esotericsoftware.kryo.Kryo.readObject(Kryo.java:731)
at com.esotericsoftware.kryo.serializers.ObjectField.read(ObjectField.java:125)
... 84 more
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