@Override
protected void handleTableOperation(List<HRegionInfo> hris) throws IOException {
MasterCoprocessorHost cpHost = ((HMaster) this.server)
.getMasterCoprocessorHost();
if (cpHost != null) {
cpHost.preDeleteColumnHandler(this.tableName, this.familyName);
}
// Update table descriptor
this.masterServices.getMasterFileSystem().deleteColumn(tableName, familyName);
// Remove the column family from the file system
MasterFileSystem mfs = this.masterServices.getMasterFileSystem();