vishal-genea opened a new issue, #12951:
URL: https://github.com/apache/hudi/issues/12951
**Describe the problem you faced**
Flink + Hudi COW + upsert mode + S3 path -> too slow. Nearly taking half an
hour for 13k records only.
**To Reproduce**
Steps to reproduce the behavior:
Use these configuration to reproduce
" 'connector' = 'hudi'," +
" 'path' = '" + S3_PATH + "'," +
" 'table.type' = 'COPY_ON_WRITE'," +
" 'hoodie.table.name' = '" + HUDI_TABLE_NAME + "'," +
" 'hoodie.datasource.write.recordkey.field' = 'event_id'," +
" 'hoodie.datasource.write.partitionpath.field' =
'customer_uuid,year,month'," +
" 'hoodie.datasource.write.precombine.field' = 'time'," +
" 'hoodie.schema.on.read.enable' = 'true'," +
" 'hoodie.parquet.compression.codec' = 'snappy'," +
" 'hoodie.datasource.write.operation' = 'upsert',"+
" 'hoodie.parquet.max.file.size' = '10485760',"+
" 'write.tasks' = '8',"+
" 'hoodie.populate.meta.fields' = 'true',"+
" 'hoodie.table.keygenerator.class' =
'org.apache.hudi.keygen.NonpartitionedKeyGenerator',"+
" 'hoodie.metadata.enable' = 'false'"+
**Expected behavior**
It should process the data within a minutes, evne for 1 million records.
**Environment Description**
* Hudi version : 0.15.0
* Flink version : 1.18
* Hadoop version : 3.1.4
* Storage (HDFS/S3/GCS..) : S3
* Running on Docker? (yes/no) : no
**Additional context**
- use these configs
```
" 'connector' = 'hudi'," +
" 'path' = '" + S3_PATH + "'," +
" 'table.type' = 'COPY_ON_WRITE'," +
" 'hoodie.table.name' = '" + HUDI_TABLE_NAME + "'," +
" 'hoodie.datasource.write.recordkey.field' = 'event_id'," +
" 'hoodie.datasource.write.partitionpath.field' =
'customer_uuid,year,month'," +
" 'hoodie.datasource.write.precombine.field' = 'time'," +
" 'hoodie.schema.on.read.enable' = 'true'," +
" 'hoodie.parquet.compression.codec' = 'snappy'," +
" 'hoodie.datasource.write.operation' = 'upsert',"+
" 'hoodie.parquet.max.file.size' = '10485760',"+
" 'write.tasks' = '8',"+
" 'hoodie.populate.meta.fields' = 'true',"+
" 'hoodie.table.keygenerator.class' =
'org.apache.hudi.keygen.NonpartitionedKeyGenerator',"+
" 'hoodie.metadata.enable' = 'false'"+
```
- Sinking time is very random but it is taking ~half an hour for 13k and for
28K it tool 2 hours, which is very wierd
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