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https://issues.apache.org/jira/browse/HDFS-11121?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15746495#comment-15746495
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Wei-Chiu Chuang commented on HDFS-11121:
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Never mind my point #2. I just realized early version of Hadoop used random
block ids, and negative id is thus possible.
> Add assertions to BlockInfo#addStorage to protect from breaking
> reportedBlock-blockGroup mapping
> ------------------------------------------------------------------------------------------------
>
> Key: HDFS-11121
> URL: https://issues.apache.org/jira/browse/HDFS-11121
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: erasure-coding
> Affects Versions: 3.0.0-alpha1
> Reporter: Takanobu Asanuma
> Assignee: Takanobu Asanuma
> Priority: Critical
> Fix For: 3.0.0-alpha2
>
> Attachments: HDFS-11121.1.patch
>
>
> There are not any assertions in {{BlockInfo.addStorage}}. This may cause that
> {{BlockInfo}} instances accept strange block reports and result in serious
> bugs, like HDFS-10858.
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