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Published 20 hours ago • verified publisher icon apache

WIP add reservation related metrics to scan server

Open keith-turner opened this issue 1 year ago • 3 comments

Scan servers differ from in tablet servers in that they can service scans for any tablet, but must read the tablets files and reserve those files to prevent the Accumulo GC from removing them. This happens the first time a tablet is read on a scan server and involves reads and writes to the metadata table. This PR is a start at adding metrics related to reservations so that is possible to have visibility into the impact of this process on scans.

keith-turner avatar Apr 13 '24 00:04 keith-turner

Have not tested this yet, wanted to figure out the metrics for the tablet metadata cache before testing. Have a TODO in the PR about metrics for the cache.

keith-turner avatar Apr 13 '24 00:04 keith-turner

closing in favor of #4461

keith-turner avatar Apr 17 '24 21:04 keith-turner

@keith-turner - did you mean to close this?

dlmarion avatar Apr 19 '24 15:04 dlmarion