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Peter Vary commented on HIVE-26882:
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If someone from the MySQL/MariaDB community could describe their
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katty he commented on HIVE-26882:
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so this bug can be resolved in hive side?
> Allow transactional check
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Rui Li commented on HIVE-26882:
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[~pvary] thanks for the pointer. I think it might work. Will run our e2e
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Peter Vary commented on HIVE-26882:
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[~lirui]: You could try this:
```
query.executeUpdate()
```
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Rui Li commented on HIVE-26882:
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Hi [~pvary], I tried writing direct SQL with JDO:
{code:Java}
String dml =
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Peter Vary commented on HIVE-26882:
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{quote}
Yes, but that requires the direct SQL and JDO run in the
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Rui Li commented on HIVE-26882:
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bq. I'm trying to suggest to use the direct SQL to update the metadata
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Peter Vary commented on HIVE-26882:
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{quote}The issue is each alter table operation updates more than
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Rui Li commented on HIVE-26882:
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bq. What do you see as an issue with that?
The issue is each alter table
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Peter Vary commented on HIVE-26882:
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[~lirui]: Thanks for collecting the possibilities.
I am not
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Rui Li commented on HIVE-26882:
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I found two options for MariaDB:
# Use SERIALIZABLE level.
# Use
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Peter Vary commented on HIVE-26882:
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Do we have working solution for MariaDB?
> Allow transactional
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Rui Li commented on HIVE-26882:
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In terms of performance, we tested both SERIALIZABLE, and REPEATABLE_READ
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Rui Li commented on HIVE-26882:
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Hi [~pvary], I tested using docker image {{{}mysql:5.6.17{}}}.
Tried both
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Peter Vary commented on HIVE-26882:
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[~lirui]: I try to wreck my brain to remember how did I test this
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Rui Li commented on HIVE-26882:
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I tried running these SQLs in each transaction, but none of them made the
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Peter Vary commented on HIVE-26882:
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Can we force the MariaDB \{REPEATABLE_READ} to prevent the
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Rui Li commented on HIVE-26882:
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I run our test again, with MariaDB at SERIALIZABLE level and the results
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Rui Li commented on HIVE-26882:
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[~pvary] Thanks for your comment. I ran some test for the scenarios
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Peter Vary commented on HIVE-26882:
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[~lirui]: Is the same true if we read the previous value before
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Rui Li commented on HIVE-26882:
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And if this feature has only been verified with Postgres, perhaps we
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Rui Li commented on HIVE-26882:
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I tested again with MariaDB and there're fewer commit conflicts in HMS log
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Rui Li commented on HIVE-26882:
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Hey [~pvary], thanks for your insights! I'll check whether the number of
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Peter Vary commented on HIVE-26882:
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I see this in the MariaDB doc:
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Peter Vary commented on HIVE-26882:
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Thanks for your interest in the change.
I have tested it with
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Rui Li commented on HIVE-26882:
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Hi [~pvary], we're trying to improve performance of concurrent write to
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Alagappan Maruthappan commented on HIVE-26882:
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Oracle doesn't support repeatable read -
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Peter Vary commented on HIVE-26882:
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Thanks [~ayushtkn] for all the help!
> Allow transactional check
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Ayush Saxena commented on HIVE-26882:
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3.2 will be the one getting released earliest, should be
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Peter Vary commented on HIVE-26882:
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Merged all of them.
Thanks for the review [~ayushtkn]!
Is there a
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Ayush Saxena commented on HIVE-26882:
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Sure, have approved them all [~pvary]
> Allow transactional
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Peter Vary commented on HIVE-26882:
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[~ayushtkn]: Could you please approve the PR then?
Did the
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Ayush Saxena commented on HIVE-26882:
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We can merge it [~pvary] , The branch-3 built isn't stable
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Peter Vary commented on HIVE-26882:
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[~ayushtkn]: Thanks for the help!
I have created the PR, an run
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Ayush Saxena commented on HIVE-26882:
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I gave it a try and faced the same issue, there was one line
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Peter Vary commented on HIVE-26882:
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Hi [~ayushtkn]! Long time, no see. I hope things are going well
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Ayush Saxena commented on HIVE-26882:
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Hi [~pvary]
Got some offline pointers from Attila around
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