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e917b874f9
The Alternator test test_ttl.py::test_ttl_expiration_gsi_lsi was flaky.
The test incorrectly assumes that when we write an already expired item,
it will be visible for a short time until being deleted by the TTL thread.
But this doesn't need to be true - if the test is slow enough, it may go
look or the item after it was already expired!
So we fix this test by splitting it into two parts - in the first part
we write a non-expiring item, and notice it eventually appears in the
GSI, LSI, and base-table. Then we write the same item again, with an
expiration time - and now it should eventually disappear from the GSI,
LSI and base-table.
This patch also fixes a small bug which prevented this test from running
on DynamoDB.
Fixes #14495
Signed-off-by: Nadav Har'El <nyh@scylladb.com>
Closes #14496
(cherry picked from commit 599636b307)