Hi, In the current HBase versions a Filter needs to be deployed by putting a jar into all region servers (and depending on the HBase version restart the regionservers).
I'm in a multi tenant cluster environment where we may run into the need to have both the old and the new version of a Filter available at the same time. Also the option of having a method of easily trying out a new implementation for a Filter (to see if it performs better) would be a lot easier if it were possible to use a custom Filter without having to put it onto all region servers. So after some Googling I found this interesting experiment for dynamically uploading the Filter code with the Scan: http://tech.flurry.com/2012/12/06/exploring-dynamic-loading-of-custom-filters-i/ My question: Is such a feature planned for the mainline HBase? -- Best regards Niels Basjes
