memory leaks in 1.0.5

[Radim Kolar]

I have problem with reproducible memory leaks in 1.0.5 - node ends with 
OOM, it worked fine with 1.0.3. Can someone write guide how to report 
memory leaks - i can collect jmap dumps. It would be best to write wiki 
page about it.

I am not happy with 1.x branch stability. It has memory leaks and rows 
forever stuck in HintsColumnFamily;

Is there some simple way to convert keys in HCF RowKey: 
4241c76b735b154119e2dd3000000000 to token or IP?