storage: push txn queues for high contention scenarios

[jseldess]

Important updates to how we handle transaction priority in high-contention scenarios. Need to update transactions.md and other transaction-related docs.

PR: cockroachdb/cockroach#13501

cc: @spencerkimball

[spencerkimball]

If you can point me at relevant docs, I can do an update.

…

On Fri, Feb 24, 2017 at 12:20 PM jseldess ***@***.***> wrote: Important updates to how we handle transaction priority in high-contention scenarios. Need to update transactions.md and other transaction-specific docs. PR: cockroachdb/cockroach#13501 <cockroachdb/cockroach#13501> cc: @spencerkimball <https://github.com/spencerkimball> — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#1117>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AF3MTS4XsHdmYOH7LWmrtde_TFIg4C_Xks5rfzuDgaJpZM4MLoml> .

[jseldess]

Thanks for offering, @spencerkimball. Mostly, we need to update transactions.md. But there may be minor updates needed on other pages as well:

• set-transaction.md: Might want to clarify the description for the PRIORITY parameter.
• begin-transaction.md: Same as above. Also might want to alter the callouts about transaction retries.
• rollback-transaction.md: Not sure if we need to change any details around the 40001 / retry transaction error.
• release-savepoint.md: Not sure if this needs updates.
• frequently-asked-questions.md: Probably want to update the answer to "How are transactions in CockroachDB lock-free?"

Also, we may need to tweak the language in the Transaction (with retry logic) sections of these tutorials:

• build-a-c++-app-with-cockroachdb.md
• build-a-clojure-app-with-cockroachdb.md
• build-a-go-app-with-cockroachdb.md
• build-a-java-app-with-cockroachdb.md
• build-a-nodejs-app-with-cockroachdb.md
• build-a-php-app-with-cockroachdb.md
• build-a-python-app-with-cockroachdb.md
• build-a-ruby-app-with-cockroachdb.md
• build-a-rust-app-with-cockroachdb.md

Lots of updates, so let me know if you'd rather I take on some or all of them.