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https://issues.apache.org/jira/browse/HADOOP-18458?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sammi Chen resolved HADOOP-18458.
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Resolution: Fixed
> AliyunOSS: AliyunOSSBlockOutputStream to support heap/off-heap buffer before
> uploading data to OSS
> --------------------------------------------------------------------------------------------------
>
> Key: HADOOP-18458
> URL: https://issues.apache.org/jira/browse/HADOOP-18458
> Project: Hadoop Common
> Issue Type: Improvement
> Components: fs/oss
> Affects Versions: 3.0.3, 3.1.4, 2.10.2, 3.2.4, 3.3.4
> Reporter: wujinhu
> Assignee: wujinhu
> Priority: Major
> Labels: pull-request-available
> Fix For: 3.4.0
>
>
> Recently, our customers raise a requirement: AliyunOSSBlockOutputStream
> should support heap/off-heap buffer before uploading data to OSS.
> Currently, AliyunOSSBlockOutputStream buffers data in local directory before
> uploading to OSS, it is not efficient compared to memory.
> Changes:
> # Adds heap/off-heap buffers
> # Adds limitation of memory used, and fallback to disk
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