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https://issues.apache.org/jira/browse/HDFS-7035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Lei (Eddy) Xu updated HDFS-7035:
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Attachment: HDFS-7035.014.patch
[~cmccabe] I made changes based on your comments. Thanks!
bq. this isn't needed because VolumeBuilder is in the same Java package as
Storage.
This function is {{BlockPoolSliceStorage#addStorageDir}}, which is called by
{{DataStorage#VolumeBuilder}}. I could not use {{protected}} or project
visibility here.
> Make adding volume an atomic operation.
> ---------------------------------------
>
> Key: HDFS-7035
> URL: https://issues.apache.org/jira/browse/HDFS-7035
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode
> Affects Versions: 2.5.0
> Reporter: Lei (Eddy) Xu
> Assignee: Lei (Eddy) Xu
> Attachments: HDFS-7035.000.combo.patch, HDFS-7035.000.patch,
> HDFS-7035.001.combo.patch, HDFS-7035.001.patch, HDFS-7035.002.patch,
> HDFS-7035.003.patch, HDFS-7035.003.patch, HDFS-7035.004.patch,
> HDFS-7035.005.patch, HDFS-7035.007.patch, HDFS-7035.008.patch,
> HDFS-7035.009.patch, HDFS-7035.010.patch, HDFS-7035.010.patch,
> HDFS-7035.011.patch, HDFS-7035.012.patch, HDFS-7035.013.patch,
> HDFS-7035.014.patch
>
>
> It refactors {{DataStorage}} and {{BlockPoolSliceStorage}} to reduce the
> duplicate code and supports atomic adding volume operations. Also it
> parallels loading data volume operation: each thread loads one volume.
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