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From "Yanjia Gary Li (Jira)" <j...@apache.org>
Subject [jira] [Created] (HUDI-494) [DEBUGGING] Huge amount of tasks when writing files into HDFS
Date Fri, 03 Jan 2020 05:08:00 GMT
Yanjia Gary Li created HUDI-494:
-----------------------------------

             Summary: [DEBUGGING] Huge amount of tasks when writing files into HDFS
                 Key: HUDI-494
                 URL: https://issues.apache.org/jira/browse/HUDI-494
             Project: Apache Hudi (incubating)
          Issue Type: Test
            Reporter: Yanjia Gary Li
            Assignee: Vinoth Chandar
         Attachments: Screen Shot 2020-01-02 at 8.53.24 PM.png, Screen Shot 2020-01-02 at
8.53.44 PM.png

I am using the manual build master after [https://github.com/apache/incubator-hudi/commit/36b3b6f5dd913d3f1c9aa116aff8daf6540fed65] commit. 

I am seeing 3 million tasks when the Hudi Spark job writing the files into HDFS. 

I am seeing a huge amount of 0 byte files being written into .hoodie/.temp/ folder in my HDFS.
In the Spark UI, each task only writes less than 10 records in
{code:java}
count at HoodieSparkSqlWriter{code}
 All the stages before this seems normal. Any idea what happened here?

 



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