[FLINK-21062] Meeting NPE when using the dynamic Index in elasticsearch connector

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Not A Bug
• Affects Version/s: 1.11.0
• Component/s: Connectors / ElasticSearch, Table SQL / Ecosystem
• Assignee: xiaozilong
• Reporter: xiaozilong
• Created: 21/Jan/21 07:19
• Updated: 22/Jan/21 03:19
• Resolved: 21/Jan/21 10:25

Description

The program will throws NPE when using the dynamic Index in elasticsearch connector. 

The DDL like:

create table bigoflow_logs_output(
  jobName VARCHAR,
  userName VARCHAR,
  proctime TIMESTAMP
) with (
  'connector' = 'elasticsearch-7',
  'hosts' = 'http://127.0.0.1:9400',
  'index' = 'flink2es-{proctime|yyyy-MM-dd}'
);

The problem mayby that the method `AbstractTimeIndexGenerator#open()` is not called when `AbstractTimeIndexGenerator` is initialized.

The exception stack is as follows: 

java.lang.NullPointerException: formatter    
at java.util.Objects.requireNonNull(Objects.java:228) ~[?:1.8.0_60]    
at java.time.LocalDateTime.format(LocalDateTime.java:1751) ~[?:1.8.0_60]    
at org.apache.flink.streaming.connectors.elasticsearch.table.IndexGeneratorFactory.lambda$createFormatFunction$27972a5d$3(IndexGeneratorFactory.java:161) ~[flink-connector-elasticsearch-base_2.12-1.11.0.jar:1.11.0]    
at org.apache.flink.streaming.connectors.elasticsearch.table.IndexGeneratorFactory$1.generate(IndexGeneratorFactory.java:118) [flink-connector-elasticsearch-base_2.12-1.11.0.jar:1.11.0]    
at org.apache.flink.streaming.connectors.elasticsearch.table.RowElasticsearchSinkFunction.processUpsert(RowElasticsearchSinkFunction.java:103) [flink-connector-elasticsearch-base_2.12-1.11.0.jar:1.11.0]    
at org.apache.flink.streaming.connectors.elasticsearch.table.RowElasticsearchSinkFunction.process(RowElasticsearchSinkFunction.java:79) [flink-connector-elasticsearch-base_2.12-1.11.0.jar:1.11.0]    
at org.apache.flink.streaming.connectors.elasticsearch.table.RowElasticsearchSinkFunction.process(RowElasticsearchSinkFunction.java:44) [flink-connector-elasticsearch-base_2.12-1.11.0.jar:1.11.0]    
at org.apache.flink.streaming.connectors.elasticsearch.ElasticsearchSinkBase.invoke(ElasticsearchSinkBase.java:310) [flink-connector-elasticsearch-base_2.12-1.11.0.jar:1.11.0]    
at org.apache.flink.table.runtime.operators.sink.SinkOperator.processElement(SinkOperator.java:86) [flink-table-blink_2.12-1.11.0.jar:1.11.0]    
at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:717) [flink-dist_2.12-1.11.0.jar:1.11.0]    
at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:692) [flink-dist_2.12-1.11.0.jar:1.11.0]    
at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:672) [flink-dist_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:52) [flink-dist_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:30) [flink-dist_2.12-1.11.0.jar:1.11.0]    at StreamExecCalc$14.processElement(Unknown Source) [flink-table-blink_2.12-1.11.0.jar:?]    at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.pushToOperator(OperatorChain.java:717) [flink-dist_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:692) [flink-dist_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.runtime.tasks.OperatorChain$CopyingChainingOutput.collect(OperatorChain.java:672) [flink-dist_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:52) [flink-dist_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:30) [flink-dist_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.api.operators.StreamSourceContexts$NonTimestampContext.collect(StreamSourceContexts.java:104) [flink-dist_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.api.operators.StreamSourceContexts$NonTimestampContext.collectWithTimestamp(StreamSourceContexts.java:111) [flink-dist_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.connectors.kafka.internals.AbstractFetcher.emitRecordsWithTimestamps(AbstractFetcher.java:352) [flink-connector-kafka-base_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.connectors.kafka.internal.KafkaFetcher.partitionConsumerRecordsHandler(KafkaFetcher.java:244) [flink-connector-kafka_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.connectors.kafka.internal.KafkaFetcher.runFetchLoop(KafkaFetcher.java:200) [flink-connector-kafka_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.connectors.kafka.FlinkKafkaConsumerBase.run(FlinkKafkaConsumerBase.java:813) [flink-connector-kafka-base_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:100) [flink-dist_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.api.operators.StreamSource.run(StreamSource.java:63) [flink-dist_2.12-1.11.0.jar:1.11.0]    at org.apache.flink.streaming.runtime.tasks.SourceStreamTask$LegacySourceFunctionThread.run(SourceStreamTask.java:201) [flink-dist_2.12-1.11.0.jar:1.11.0]