[jira] [Commented] (PHOENIX-3639) WALEntryFilter to replicate only multi-tenant views from SYSTEM.CATALOG

["James Taylor (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PHOENIX-3639?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15866484#comment-15866484 ] 

James Taylor commented on PHOENIX-3639:
---------------------------------------

[~gjacoby] - looks like we need an updated patch for 4.x-HBase-0.98 branch as I'm getting compilation errors:
{code}
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.0:compile (default-compile) on project phoenix-core: Compilation failure: Compilation failure:
[ERROR] /Users/jtaylor/dev/apache/phoenix/phoenix-core/src/main/java/org/apache/phoenix/replication/SystemCatalogWALEntryFilter.java:[24,35] package org.apache.hadoop.hbase.wal does not exist
[ERROR] /Users/jtaylor/dev/apache/phoenix/phoenix-core/src/main/java/org/apache/phoenix/replication/SystemCatalogWALEntryFilter.java:[40,30] package WAL does not exist
[ERROR] /Users/jtaylor/dev/apache/phoenix/phoenix-core/src/main/java/org/apache/phoenix/replication/SystemCatalogWALEntryFilter.java:[40,13] package WAL does not exist
{code}

> WALEntryFilter to replicate only multi-tenant views from SYSTEM.CATALOG
> -----------------------------------------------------------------------
>
>                 Key: PHOENIX-3639
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-3639
>             Project: Phoenix
>          Issue Type: Improvement
>    Affects Versions: 4.8.0, 4.9.0
>            Reporter: Geoffrey Jacoby
>            Assignee: Geoffrey Jacoby
>              Labels: replication
>             Fix For: 4.10.0
>
>         Attachments: PHOENIX-3639.patch, PHOENIX-3639.v2.patch
>
>
> As a stopgap before PHOENIX-3520, we can create an HBase WALEntryFilter to filter out non-tenant rows of SYSTEM.CATALOG from replication while allowing tenant-owned rows such as tenant views to proceed with replication. 
> This would have to be incorporated into a ReplicationEndpoint subclass to be useful, though HBASE-17543 would make that much simpler by doing it via configuration rather than code (and avoiding the need for a new peer to be created).
> If PHOENIX-3520 is on the near-future roadmap, however, that would be the better solution to the "replication corrupts SYSTEM.CATALOG" problem.  



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