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https://issues.apache.org/jira/browse/HDFS-7663?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Walter Su updated HDFS-7663:
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Description:
Append should be easy if we have variable length block support from HDFS-3689,
i.e., the new data will be appended to a new block. We need to revisit whether
and how to support appending data to the original last block.
1. Append to a closed striped file, with NEW_BLOCK flag enabled (this)
2. Append to a under-construction striped file, with NEW_BLOCK flag enabled
(HDFS-9173)
3. Append to a striped file, by appending to last block group (follow-on)
This jira attempts to implement the #1, and also track #2, #3.
was:Append should be easy if we have variable length block support from
HDFS-3689, i.e., the new data will be appended to a new block. We need to
revisit whether and how to support appending data to the original last block.
> Erasure Coding: Append on striped file
> --------------------------------------
>
> Key: HDFS-7663
> URL: https://issues.apache.org/jira/browse/HDFS-7663
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Jing Zhao
> Assignee: Walter Su
> Attachments: HDFS-7663.00.txt
>
>
> Append should be easy if we have variable length block support from
> HDFS-3689, i.e., the new data will be appended to a new block. We need to
> revisit whether and how to support appending data to the original last block.
> 1. Append to a closed striped file, with NEW_BLOCK flag enabled (this)
> 2. Append to a under-construction striped file, with NEW_BLOCK flag enabled
> (HDFS-9173)
> 3. Append to a striped file, by appending to last block group (follow-on)
> This jira attempts to implement the #1, and also track #2, #3.
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