A regression introduced in v3.6.2 meant that createIndex operations would not be executed with a fixed
primary read preference. This resulted in the driver selecting any server for the operation, which would
fail if a non-primary was selected.
The driver periodically monitors members of the replicaset for changes in the topology, but ensures that
the "monitoring thread" is never woken sooner than 500ms. Measuring this elapsed time depends on a
stable clock, which is not available to us in some virtualized environments like AWS Lambda. The result
was that periodically operations would think there were no available servers, and the driver would force
a wait of heartbeatFrequencyMS (10s by default) before reaching out to servers again for a new
monitoring check. The internal async interval timer has been improved to account for these environments
A regression introduced in v3.6.0 forced the driver to reuse a single kerberos client for all
authentication attempts. This would result in incomplete authentication flows, and occaisionally even
a crash in the kerberos module. The driver has been reverted to creating a kerberos client per
authentication attempt.
A change introduced in v3.6.1 switched all our usage of process.nextTick in the connection pool with
setImmediate per Node.js core recommendation. This was observed to introduce noticeable latency when the event loop
was experiencing pressure, so the change was reverted for this release pending further investigation.
Community Contributions
@jswangjunsheng submitted a fix for a rare scenario when wait queue members time out before connection establishment
@through-a-haze submitted a fix for incorrect construction of an X509 authentication message
@andreialecu helped us indicate peer optional dependencies in our package.json for stricter package managers (pnpm, yarn2)
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Bumps mongodb from 3.6.1 to 3.6.3.
Release notes
Sourced from mongodb's releases.
Commits
86ae813
chore(release): 3.6.3308f840
chore: ensure aws4 is present for mongodb-aws tests9110a45
fix: correctly assign username to X509 auth command (#2587)c9f9d5e
fix: revert use of setImmediate to process.nextTick (#2611)89b77ed
fix: Change socket timeout default to 0 (#2572)033b6e7
fix: move kerberos client setup from prepare to auth (#2608)f0cee7a
test: restrict geoSearch tests to mongodb <= 4.4 (#2612)186090e
fix: add peerDependenciesMeta to mark optional deps (#2606)cafaa1b
fix: connection leak if wait queue member cancelled79df553
test: removes destructuring, spread, rest syntax and adds lint rulesDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
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