lfrancke commented on issue #3425: NIFI-6197 HBase: Fix deprecations, default 
for client retries & validations
URL: https://github.com/apache/nifi/pull/3425#issuecomment-482715707
 
 
   Just for reference: With all default settings these will be the retry 
values/backoff times) for each retry:
   100ms, 200ms, 300ms, 500ms, 1s, 2s, 4s, 10s, 10s, 10s, 10s, 20s, 20s, ...
   
   So with the default retry of 15 in HBase 2 that'll be 129,1s
   For 35 retries (HBase 1) that'll be 528,1s.
   
   I totally get that this is not great to wait for during a connection timeout 
but 1-1,5 minutes is how long a crashed server recovery can take and I'd rather 
take the one-time hit than problems during runtime. We are working on getting 
that down but I believe it really is not a good idea to go lower than the 
default values (35/15).
   
   If you insist I could set an explicit default of 15 for HBase 1 and rely on 
the hardcoded default for HBase 2 (which should hopefully just go down in newer 
versions).

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