Steve Loughran created HADOOP-19478:
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Summary: S3A: pull out new configuration load/probes under S3AStore
Key: HADOOP-19478
URL: https://issues.apache.org/jira/browse/HADOOP-19478
Project: Hadoop Common
Issue Type: Sub-task
Components: fs/s3
Affects Versions: 3.4.1
Reporter: Steve Loughran
Assignee: Steve Loughran
I am doing this as part of HADOOP-19256, but wanted to call it out for specific
mention.
S3AFS i's too full of switches; it is why initialize() is so big, and there are
lots and lots of fields to record the values.
Many of these need to go down into S3AStoreImpl, but replicating the same
design just pushes the mess down.
Proposed: a child service StoreConfigurationService, which reads in the config
during serviceInit(), and set the state in there, from where it can be probed.
I am initially doing this purely for new configuration flags for the
conditional write feature
* moving other flags in there would be separate work
* new boolean config options should go in here
* we also need to think about integers, units of scale and durations.
Ideally, we should use something reflection based as abfs does.
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