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ahallam
ahallam
Gold ⭐️
January 25, 2017

HDP 2.5.3 : Hive Throws ConcurrentModificationException When Executing Insert Overwrite Table

  • October 5, 2026 at 9:28 AM
  • 1 reply
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bug (HIVE-15355) is being worked on by Hive engineering team at Hoortonworks

You can use the following workaround :

1- use "SORT BY 0" at the end of the query which will force to use one reducer , please use this only if you have a small query.

2- try to use set hive.mv.files.thread=0; before running the query.

If you have any question regarding the above, please let me know.

1 reply

viswanath_kammu
viswanath_kammu
Silver ⭐️⭐️⭐️
February 17, 2017

Does setting hive.mv.file.thread=0 reduce the performance of the insert query.Can you explain what does setting this configration has to do with HDP 2.5 upgrade

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