Geoffrey Jacoby created HBASE-17543:
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Summary: Create additional ReplicationEndpoint WALEntryFilters by
configuration
Key: HBASE-17543
URL: https://issues.apache.org/jira/browse/HBASE-17543
Project: HBase
Issue Type: Improvement
Components: Replication
Reporter: Geoffrey Jacoby
Assignee: Geoffrey Jacoby
The existing BaseReplicationEndpoint creates a ChainWALEntryFilter containing a
NamespaceTableCfWALEntryFilter and a ScopeWALEntryFilter. Adding a custom
WALEntryFilter type to this chain requires creating an entirely new
ReplicationEndpoint subclass and creating a new peer on the running cluster,
which can be operationally complex to transition to without data loss in cases
such as master/master.
For WALEntryFilters without constructor parameters, it would be straightforward
to have a Configuration option to list additional WALEntryFilter classes the
operator wants to include in the filter chain in the default endpoint, and then
have the endpoint instantiate the filters via reflection. Then filter logic
could be added (or removed) with only a hbase-site.xml change and a rolling
restart.
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