Commit Graph

9 Commits

Author SHA1 Message Date
Egon Elbre
080ba47a06 all: fix dots
Change-Id: I6a419c62700c568254ff67ae5b73efed2fc98aa2
2020-07-16 14:58:28 +00:00
stefanbenten
257855b5de all: replace == comparison with errors.Is
Change-Id: I05d9a369c7c6f144b94a4c524e8aea18eb9cb714
2020-07-14 15:50:25 +00:00
Jeff Wendling
d20db90cff private/dbutil/txutil: create new transactions for retries
it was noticed that if you had a long lived transaction A that
was blocking some other transaction B and A was being aborted
due to retriable errors, then transaction B was never given
priority. this was due to using savepoints to do lightweight
retries.

this behavior was problematic becaue we had some queries blocked
for over 16 hours, so this commit addresses the issue with two
prongs:

    1. bound the amount of time we will retry a transaction
    2. create new transactions when a retry is needed

the first ensures that we never wait for 16 hours, and the value
chosen is 10 minutes. that should be long enough for an ample
amount of retries for small queries, and huge queries probably
shouldn't be retried, even if possible: it's more preferrable to
find a way to make them smaller.

the second ensures that even in the case of retries, queries that
are blocked on the aborted transaction gain priority to run.

between those two changes, the maximum stall time due to retries
should be bounded to around 10 minutes.

Change-Id: Icf898501ef505a89738820a3fae2580988f9f5f4
2020-02-01 18:34:28 +00:00
Egon Elbre
59d06644b9 private/migrate: switch to tagsql
Also added temporary types withRebind and withTagTx,
which will be later removed. Currently they help to avoid
changing the whole codebase at the same time.

Change-Id: I7f07ba8f4709a23a463bfa67464628665a05808f
2020-01-19 14:39:16 +02:00
Egon Elbre
64fb2d3d2f Revert "dbutil: statically require all databases accesses to use contexts"
This reverts commit 8e242cd012.

Revert because lib/pq has known issues with context cancellation.
These issues need to be resolved before these changes can be merged.

Change-Id: I160af51dbc2d67c5449aafa406a403e5367bb555
2020-01-15 07:28:00 +00:00
JT Olio
8e242cd012 dbutil: statically require all databases accesses to use contexts
this will allow for some nice runtime analysis down the road.
also, this allows for wrapping database handles in a way that
can interact with these contexts

requires https://review.dev.storj.io/c/storj/dbx/+/514

Change-Id: Ib087b7cd73296dd2c1e0331314da34d861f61d2b
2020-01-14 18:20:47 -05:00
Egon Elbre
ff267168c5 private/migrate: add ctx argument
Change-Id: I3d65912d89261386413c494c7ed1576fed4dcaf4
2020-01-13 15:52:26 +02:00
paul cannon
0c88a7b475 private/migrate: use transactional helpers and not Begin()
This code needs to work against cockroachDB, so transactions must be retried
when a retryable error is returned. This change puts migrate
transactions into the dbutil.WithTx transactional helpers to achieve
this in the easiest way.

Change-Id: Ib930e82d55cb0257357a222ce9131e6e53372c03
2020-01-07 18:25:38 +00:00
Egon Elbre
ee6c1cac8a
private: rename internal to private (#3573) 2019-11-14 21:46:15 +02:00