NITIN VERMA created HBASE-17460:
-----------------------------------
Summary: enable_table_replication can not perform cyclic
replication of a table
Key: HBASE-17460
URL: https://issues.apache.org/jira/browse/HBASE-17460
Project: HBase
Issue Type: Bug
Components: Replication
Reporter: NITIN VERMA
The enable_table_replication operation is broken for cyclic replication of
HBase table as we compare all the properties of column families (including
REPLICATION_SCOPE).
Below is exactly what happens:
1. Running "enable_table_replication 'table1' " opeartion on first cluster
will set the REPLICATION_SCOPE of all column families to peer id '1'. This will
also create a table on second cluster where REPLICATION_SCOPE is still set to
peer id '0'.
2. Now when we run "enable_table_replication 'table1'" on second cluster, we
compare all the properties of table (including REPLICATION_SCOPE_, which
obviously is different now.
I am proposing a fix for this issue where we should avoid comparing
REPLICATION_SCOPE inside HColumnDescriotor::compareTo() method, especially when
replication is not already enabled on the desired table.
I have made that change and it is working. I will submit the patch soon.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
