Repository navigation
HBASE-30541 [hbtop] NPE when the first getClusterMetrics() call fails (branch-2) - #8886
Open
arvindKandpal-ksolves wants to merge 1 commit into
Open
arvindKandpal-ksolves wants to merge 1 commit into
arvindKandpal-ksolves wants to merge 1 commit into
Conversation
This file contains hidden or 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
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Backport to branch-2.
Problem
When the first
Admin#getClusterMetrics()call fails,TopScreenModelkeepsrecordsandsummaryasnull, andTopScreenPresenter#refreshthrows aNullPointerExceptionongetRecords().size(). hbtop exits with this NPE.Changes
TopScreenModel: initializerecordsto an empty list.TopScreenView: skip the summary while no metrics have been fetched yet.TestTopScreenModel: add a test where the firstgetClusterMetrics()call fails.With this change, hbtop logs the error and retries on the next refresh.
Testing