You are viewing a plain text version of this content. The canonical link for it is here.
Posted to dev@phoenix.apache.org by "James Taylor (JIRA)" <ji...@apache.org> on 2017/06/02 18:25:04 UTC
[jira] [Updated] (PHOENIX-3907) Use LATEST_TIMESTAMP when
UPDATE_CACHE_FREQUENCY is not zero
[ https://issues.apache.org/jira/browse/PHOENIX-3907?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
James Taylor updated PHOENIX-3907:
----------------------------------
Description: For non transactional tables, currently with UPDATE_CACHE_FREQUENCY, we'll use LATEST_TIMESTAMP *most* of the time, until the cached entity expires, in which case we'll use the server timestamp. This seems a bit strange and inconsistent. Instead (for non transactional tables), we should always use LATEST_TIMESTAMP if UPDATE_CACHE_FREQUENCY is non zero, with the exception of the corner case for UPSERT SELECT and DELETE where the same table is being read and written to (see changes to FromCompiler for PHOENIX-3823). (was: Currently with UPDATE_CACHE_FREQUENCY, we'll use LATEST_TIMESTAMP *most* of the time, until the cached entity expires, in which case we'll use the server timestamp. This seems a bit strange and inconsistent. We should instead always use LATEST_TIMESTAMP if UPDATE_CACHE_FREQUENCY is non zero, with the exception of the corner case for UPSERT SELECT and DELETE where the same table is being read and written to (see changes to FromCompiler for PHOENIX-3823).)
> Use LATEST_TIMESTAMP when UPDATE_CACHE_FREQUENCY is not zero
> ------------------------------------------------------------
>
> Key: PHOENIX-3907
> URL: https://issues.apache.org/jira/browse/PHOENIX-3907
> Project: Phoenix
> Issue Type: Bug
> Reporter: James Taylor
>
> For non transactional tables, currently with UPDATE_CACHE_FREQUENCY, we'll use LATEST_TIMESTAMP *most* of the time, until the cached entity expires, in which case we'll use the server timestamp. This seems a bit strange and inconsistent. Instead (for non transactional tables), we should always use LATEST_TIMESTAMP if UPDATE_CACHE_FREQUENCY is non zero, with the exception of the corner case for UPSERT SELECT and DELETE where the same table is being read and written to (see changes to FromCompiler for PHOENIX-3823).
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)