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https://issues.apache.org/jira/browse/HUDI-3773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17516131#comment-17516131
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Ethan Guo commented on HUDI-3773:
---------------------------------

One finding: there is one ill-configured and misused parallelism, 
"hoodie.bloom.index.parallelism".  The parallelism is always 1, i.e., no 
parallelization, because {{recordsGenerationParams.getBloomIndexParallelism()}} 
 is 0

HoodieTableMetadataUtil.convertMetadataToBloomFilterRecords()
final int parallelism = Math.max(Math.min(allWriteStats.size(), 
recordsGenerationParams.getBloomIndexParallelism()), 1);
HoodieData<HoodieWriteStat> allWriteStatsRDD = 
context.parallelize(allWriteStats, parallelism);
return allWriteStatsRDD.flatMap(hoodieWriteStat -> \{<bloom filter records>})

> Revisit performance of bloom filter writing flow in MDT for large batch 
> ingestion
> ---------------------------------------------------------------------------------
>
>                 Key: HUDI-3773
>                 URL: https://issues.apache.org/jira/browse/HUDI-3773
>             Project: Apache Hudi
>          Issue Type: Improvement
>            Reporter: Ethan Guo
>            Assignee: Ethan Guo
>            Priority: Blocker
>             Fix For: 0.11.0
>
>




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