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https://issues.apache.org/jira/browse/HBASE-15331?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15167746#comment-15167746
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Vladimir Rodionov commented on HBASE-15331:
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Make sure we support physical table layout change (except delete/truncate in
this phase 2).
> HBase Backup/Restore Phase 2: Optimized Restore operation
> ---------------------------------------------------------
>
> Key: HBASE-15331
> URL: https://issues.apache.org/jira/browse/HBASE-15331
> Project: HBase
> Issue Type: Improvement
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
>
> The current implementation for restore uses WALReplay M/R job. This has
> performance and stability problems, since it uses HBase client API to insert
> data. We have to migrate to bulk load approach: generate hfiles directly from
> snapshot and incremental images.
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