@Override
public void preModifyTableHandler(
ObserverContext<MasterCoprocessorEnvironment> ctx, TableName tableName, HTableDescriptor htd)
throws IOException {
HTableDescriptor oldDesc =
ctx.getEnvironment().getMasterServices().getTableDescriptors().get(tableName);
if (oldDesc.getValue(IndexLoadBalancer.PARENT_TABLE_KEY) == null
&& htd.getValue(IndexLoadBalancer.PARENT_TABLE_KEY) != null) {
TableName userTableName = TableName.valueOf(htd.getValue(IndexLoadBalancer.PARENT_TABLE_KEY));
balancer.addTablesToColocate(userTableName, htd.getTableName());
}
super.preModifyTableHandler(ctx, tableName, htd);
}
@Override
public void preCreateTableHandler(
ObserverContext<MasterCoprocessorEnvironment> ctx,
HTableDescriptor desc,
HRegionInfo[] regions)
throws IOException {
TableName userTableName = null;
if (balancer != null && desc.getValue(IndexLoadBalancer.PARENT_TABLE_KEY) != null) {
userTableName = TableName.valueOf(desc.getValue(IndexLoadBalancer.PARENT_TABLE_KEY));
balancer.addTablesToColocate(userTableName, desc.getTableName());
}
if (userTableName != null) balancer.populateRegionLocations(userTableName);
super.preCreateTableHandler(ctx, desc, regions);
}
