[GitHub] [iceberg] HavAnIdea opened a new issue, #6321: Iceberg write by flink perjob too slow!!!!!

[GitBox]

HavAnIdea opened a new issue, #6321:
URL: https://github.com/apache/iceberg/issues/6321

   ### Query engine
   
   flink
   
   ### Question
   
   I used flink API to write data
   By flink local mode, the speed is more than 20000 record/s
   but i change to flink perjob mode, the speed is under 50 record/s
   
   Same code, only changed submit mode 
   
   Code like :
   
   SingleOutputStreamOperator<RowData> map = source.filter(new 
RichFilterFunction<Record>() {
               @Override
               public boolean filter(Record value) throws Exception {
                   return filterRecord(value);
               }
           }).map(new RichMapFunction<Record, RowData>() {
               @Override
               public RowData map(Record value) throws Exception {
                   return mappingAndConvert(value);
               }
           });
   
   FlinkSink.Builder sinkBuilder = FlinkSink.forRowData(map)
                   .table(table)
                   .tableLoader(TableLoader.fromHadoopTable(tableLocation, 
getHadoopConf(icebergConfig)))
                   .writeParallelism(parallelism+10)
                   .equalityFieldColumns(equalityFiledColumns)
                   .overwrite(overwrite);
           if (Objects.nonNull(writeFileSize) && writeFileSize > 0) {
               sinkBuilder.set("target-file-size-bytes", 
String.valueOf(writeFileSize));
           }
           sinkBuilder.append();
   
   


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