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Posted to dev@phoenix.apache.org by "Lars Hofhansl (Jira)" <ji...@apache.org> on 2023/04/11 00:38:00 UTC

[jira] [Created] (OMID-240) Transactional visibility is broken with PosCommitMode = ASYNC

Lars Hofhansl created OMID-240:
----------------------------------

             Summary: Transactional visibility is broken with PosCommitMode = ASYNC
                 Key: OMID-240
                 URL: https://issues.apache.org/jira/browse/OMID-240
             Project: Phoenix Omid
          Issue Type: Bug
    Affects Versions: 1.1.0
            Reporter: Lars Hofhansl


Client I:
{code:java}
 > create table test(x float primary key, y float) DISABLE_WAL=true, TRANSACTIONAL=true;

No rows affected (1.872 seconds)

> !autocommit off
Autocommit status: false

> upsert into test values(rand(), rand());
1 row affected (0.018 seconds)

> upsert into test select rand(), rand() from test;
-- 18x

> !commit{code}
 

Client II:
{code:java}
-- repeat quickly after the commit on client I


> select count(*) from test;
+----------+
| COUNT(1) |
+----------+
| 0        |
+----------+
1 row selected (1.408 seconds)
> select count(*) from test;
+----------+
| COUNT(1) |
+----------+
| 259884   |
+----------+
1 row selected (2.959 seconds)
> select count(*) from test;
+----------+
| COUNT(1) |
+----------+
| 260145   |
+----------+
1 row selected (4.274 seconds)
> select count(*) from test;
+----------+
| COUNT(1) |
+----------+
| 260148   |
+----------+
1 row selected (5.563 seconds)
> select count(*) from test;
+----------+
| COUNT(1) |
+----------+
| 260148   |
+----------+
1 row selected (5.573 seconds){code}
The second client should either show 0 or 260148. But no other value!



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