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https://issues.apache.org/jira/browse/HBASE-12673?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14247995#comment-14247995
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Jiajia Li commented on HBASE-12673:
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hi, [~j...@cloudera.com], as you know when hbase reads mob cell, it has two
steps.
# Read the ref cell from the HBase, and get the cell value which is the mob
file name.
# HBase has two possible locations to read the mob cell, one is the
mobWorkingDir/fileName, archiveDir/fileName. When the mob file is not in the
mobWorkingDir, HBase will try the second location.But now we only retry after
the
FileNotFoundException(https://github.com/apache/hbase/blob/hbase-11339/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HMobStore.java#L312)
Do you means a table deletion on the original table happens in the middle of
the read operation will throw other IOExceptions?
I don't know the HFileLink how to guarantee the case in the MOB? Can you please
give a more detailed description? Thanks
> Add a UT to read mob file when the mob hfile moving from the mob dir to the
> archive dir
> ---------------------------------------------------------------------------------------
>
> Key: HBASE-12673
> URL: https://issues.apache.org/jira/browse/HBASE-12673
> Project: HBase
> Issue Type: Sub-task
> Components: regionserver, Scanners
> Affects Versions: hbase-11339
> Reporter: Jiajia Li
> Assignee: Jiajia Li
> Fix For: hbase-11339
>
> Attachments: HBASE-12673.patch
>
>
> add a unit test to scan the cloned table when deleting the original table,
> and the steps as following:
> 1) create a table with mobs,
> 2) snapshot it,
> 3) clone it as a a different table
> 4) have a read workload on the snapshot
> 5) delete the original table
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