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https://issues.apache.org/jira/browse/PHOENIX-3823?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16034075#comment-16034075
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Hadoop QA commented on PHOENIX-3823:
------------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12870909/PHOENIX-3823.v8.patch
against master branch at commit 5fe660537ff28de1738c3e82b65f9a2aac8fc80b.
ATTACHMENT ID: 12870909
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:red}-1 tests included{color}. The patch doesn't appear to include
any new or modified tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
{color:red}-1 patch{color}. The patch command could not apply the patch.
Console output:
https://builds.apache.org/job/PreCommit-PHOENIX-Build/968//console
This message is automatically generated.
> Force cache update on MetaDataEntityNotFoundException
> ------------------------------------------------------
>
> Key: PHOENIX-3823
> URL: https://issues.apache.org/jira/browse/PHOENIX-3823
> Project: Phoenix
> Issue Type: Sub-task
> Affects Versions: 4.10.0
> Reporter: James Taylor
> Assignee: Maddineni Sukumar
> Fix For: 4.11.0
>
> Attachments: PHOENIX-3823.patch, PHOENIX-3823.v2.patch,
> PHOENIX-3823.v3.patch, PHOENIX-3823.v4.patch, PHOENIX-3823.v5.patch,
> PHOENIX-3823.v6.patch, PHOENIX-3823.v7.patch, PHOENIX-3823.v8.patch
>
>
> When UPDATE_CACHE_FREQUENCY is used, clients will cache metadata for a period
> of time which may cause the schema being used to become stale. If another
> client adds a column or a new table or view, other clients won't see it. As a
> result, the client will get a MetaDataEntityNotFoundException. Instead of
> bubbling this up, we should retry after forcing a cache update on the tables
> involved in the query.
> The above works well for references to entities that don't yet exist.
> However, we cannot detect when some entities are referred to which no longer
> exists until the cache expires. An exception is if a physical table is
> dropped which would be detected immediately, however we would allow queries
> and updates to columns which have been dropped until the cache entry expires
> (which seems like a reasonable tradeoff IMHO. In addition, we won't start
> using indexes on tables until the cache expires.
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