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https://issues.apache.org/jira/browse/HDFS-7827?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14577605#comment-14577605
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Jing Zhao commented on HDFS-7827:
---------------------------------
I just found that for a legacy fsimage we currently always record its
layoutversion as -51 so that we can make sure it cannot be processed by a
protobuf-based image parser. Thus the following code in the parser always
returns false and the parse will fail. I will create a jira to fix this.
{code}
NameNodeLayoutVersion.supports(
NameNodeLayoutVersion.Feature.ERASURE_CODING, imgVersion)
{code}
> Erasure Coding: support striped blocks in non-protobuf fsimage
> --------------------------------------------------------------
>
> Key: HDFS-7827
> URL: https://issues.apache.org/jira/browse/HDFS-7827
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Jing Zhao
> Assignee: Hui Zheng
> Fix For: HDFS-7285
>
> Attachments: HDFS-7827.000.patch, HDFS-7827.002.patch,
> HDFS-7827.003.patch, HDFS-7827.004.patch
>
>
> HDFS-7749 only adds code to persist striped blocks to protobuf-based fsimage.
> We should also add this support to the non-protobuf fsimage since it is still
> used for use cases like offline image processing.
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