Siyao Meng created HDDS-2929:
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Summary: Implement ofs://: temp directory mount
Key: HDDS-2929
URL: https://issues.apache.org/jira/browse/HDDS-2929
Project: Hadoop Distributed Data Store
Issue Type: Sub-task
Reporter: Siyao Meng
Assignee: Siyao Meng
Because of ofs:// filesystem hierarchy starts with volume then bucket, an
application typically won't be able to write directly under a first-level
folder, e.g. ofs://service-id1/tmp/. /tmp/ is a special case that we need to
handle since that is the default location most legacy Hadoop applications write
to for swap/temporary files. In order to address this, we would introduce /tmp/
as a client-side "mount" to another Ozone bucket.
Note that the preliminary implementation would only allow for /tmp/ to be a
mount but not any user-defined path.
This depends on HDDS-2840.
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