Hbase updates #17
Merged
Hbase updates #17
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
DNS entries are not registered fast enough in headless services. This depends on cloud vendor (in GKE it's up to 60s). Without it pods are up and running only on first start, but after restart java apps will fail with error messages such as: hdfs-namenode-0 namenode java.lang.IllegalArgumentException: java.net.UnknownHostException: hdfs-namenode Set in headless services spec.publishNotReadyAddresses: true, which will enforce registration of DNS hosts even if they are not ready. Ready state is based on pod readiness/liveness probes, if they pass, the given pod is added to the endpoints. In this setup enforcing publishing DNS entries, which are not ready is not an issue. Actually this is expected because the way Hadoop stack was designed. So the DNS entries should be added, while appropriate java apps will handle the actual availability of the processes within pods. Tested for over 5 days on GKE preemptible instances.
cgiraldo
approved these changes
Apr 7, 2020
imtiny
pushed a commit
to student-drawing/charts
that referenced
this pull request
Jul 6, 2021
Hbase updates
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Fixes: #9, #12 (hbase only)
Logs: