XROOT prepare and Query:
- The attached document provided by Michael was extensively reviewed.
- (Feedback has been provided to Michael after the meeting.)
- Additional notes on EOS rate limiter:
- The EOS rate limiter was designed for keeping away rogue users from the system. In the case of EOSCTA, it was activated during EOSCTA stress testing as a workaround for minimising the impact of EOS request type handling imbalance - EOS does not provide fairsharing of different EOS request types (e.g. prepare vs archive requests).
- For every file in a prepare request, fsctl is triggererd synchronously. The rate limiter may cause some of these to fail which in turn results in a fraction of the multi-file prepare requests to not work.
- How is the client interpreting it - needs follow-up with Andreas/Elvin (after the meeting, cf attached mail)
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