Description
During read with Filters added to Scan/Get, the core code calls transformCell(Cell) on the Filter. Most of the filters do not implement transform API so the method from FilterBase will get executed
@Override public Cell transformCell(Cell v) throws IOException { // Old filters based off of this class will override KeyValue transform(KeyValue). // Thus to maintain compatibility we need to call the old version. return transform(KeyValueUtil.ensureKeyValue(v)); }
Here always it do KeyValueUtil.ensureKeyValue. When a non KV cell comes in, we need recreate KV and do deep copy of key and value!
We have to stick with this model in branch-1 for BC.
So as a workaround to avoid possible KV convert, we can implement transformCell(Cell) method in all of our individual Filter classes which just return the incoming cell (So that method from FilterBase wont get executed)
Attachments
Attachments
Issue Links
- is related to
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HBASE-12048 Remove deprecated APIs from Filter
- Closed