When nodes check in for the very first time, if the satellite can't ping
them back, they are inserted into the nodes table with
last_contact_success of '0001-01-01 00:00:00+00'. If the stray nodes
chore runs before the node can fix their problem, they are DQd.
Solution: when DQing stray nodes, dont DQ where last_contact_success =
'0001-01-01 00:00:00+00'::timestamptz
Change-Id: I477a02d5ef85b2c930ed6b7d99a4d1995169bca8
Previously we would select a limited number of nodes for DQ in a
CTE and run the update on that set in a single transaction. This
could lead to locking on the table, so instead we select and update
in separate transactions.
Change-Id: I1e802c0845e829eeadcee4fa382f58462515fdb1
We would like to log Node IDs and last contact successes of nodes DQd
in this manner. We would also like to avoid returning an unbounded list
of items from the db. Therefore we change the query to select a limited
number of nodes that meet the DQ conditions and iterate until 0 rows are
returned. Each column of the query is already indexed.
Change-Id: Iaec2d9b56e7202b7c2028ba21750d40c8dd506ee
Testing interfaces is slightly clearer when it's in the package needing
the database rather than each individual implementation.
Change-Id: I10334c214a205f7e510b939b4359a2214c4e060a
