[infinispan-issues] [JBoss JIRA] (ISPN-7526) Write skew fires even if the previous value was not read

[Radim Vansa (JIRA)]

     [ https://issues.jboss.org/browse/ISPN-7526?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Radim Vansa updated ISPN-7526:
------------------------------
    Description: 
When the entry was overwritten without reading previous value and then we read it (this read is handled from the current context), write skew check is still applied and can fail, despite that it's unnecessary.

{code:java}
cache.put("k", "init");

tm.begin();
cache.getAdvancedCache().withFlags(Flag.IGNORE_RETURN_VALUES).put("k", "v1");
assertEquals("v1", cache.put("k", "v2"));
Transaction tx = tm.suspend();

assertEquals("init", cache.put("k", "other"));

tm.resume(tx);
tm.commit(); // fails with WriteSkewCheckException
{code}

  was:
When the entry was overwritten without reading previous value and then we read it (this read is handled from the current context), write skew check is still applied and can fail, despite that it's unnecessary.

{code:java}
cache.put("k", "init");

tm.begin();
cache.getAdvancedCache().withFlags(Flag.IGNORE_RETURN_VALUES).put("k", "v1");
assertEquals("v1", cache.put("k", "v2"));
Transaction tx = tm.suspend();

assertEquals("init", cache.put("k", "other"));

tm.resume(tx);
tm.commit();
{code}



> Write skew fires even if the previous value was not read
> --------------------------------------------------------
>
>                 Key: ISPN-7526
>                 URL: https://issues.jboss.org/browse/ISPN-7526
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Core, Transactions
>    Affects Versions: 9.0.0.CR2, 8.2.6.Final
>            Reporter: Radim Vansa
>            Assignee: Radim Vansa
>
> When the entry was overwritten without reading previous value and then we read it (this read is handled from the current context), write skew check is still applied and can fail, despite that it's unnecessary.
> {code:java}
> cache.put("k", "init");
> tm.begin();
> cache.getAdvancedCache().withFlags(Flag.IGNORE_RETURN_VALUES).put("k", "v1");
> assertEquals("v1", cache.put("k", "v2"));
> Transaction tx = tm.suspend();
> assertEquals("init", cache.put("k", "other"));
> tm.resume(tx);
> tm.commit(); // fails with WriteSkewCheckException
> {code}



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