Chen Liang created HDFS-12954:
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Summary: Ozone: Container : Add key versioning support-3
Key: HDFS-12954
URL: https://issues.apache.org/jira/browse/HDFS-12954
Project: Hadoop HDFS
Issue Type: Sub-task
Components: ozone
Affects Versions: HDFS-7240
Reporter: Chen Liang
Assignee: Chen Liang
A new version of a key is effectively overwriting some consecutive range of
bytes in the entire key offset range. For each version, we need to keep exactly
what the range is in order for the IO vector to work.
Currently, since we only write from the start (offset = 0), so offset range of
a version is only up to the key data size field when the version gets
committed. But currently we only keep one single key data size variable.(see
{{KeyManagerImpl#commitKey}}). We need to know the corresponding key data size
for each version. This JIRA is to the tracking of offset range for each version.
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