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https://issues.apache.org/jira/browse/HDFS-6773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14079327#comment-14079327
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Daryn Sharp commented on HDFS-6773:
-----------------------------------
Go right ahead! My cycles are extremely limited so I don't have time to track
down which tests may depend durability. I'd suggest the cluster builder should
have another option which defaults to true. The tests that require durability
use false.
> MiniDFSCluster can run dramatically faster
> ------------------------------------------
>
> Key: HDFS-6773
> URL: https://issues.apache.org/jira/browse/HDFS-6773
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 2.0.0-alpha, 3.0.0
> Reporter: Daryn Sharp
> Assignee: Stephen Chu
>
> The mini cluster is unnecessarily running with durable edit logs. The
> following change cut runtime of a single test from ~30s to ~10s.
> {code}EditLogFileOutputStream.setShouldSkipFsyncForTesting(true);{code}
> The mini cluster should default to this behavior after identifying the few
> edit log tests that probably depend on durable logs.
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