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Posted to common-issues@hadoop.apache.org by "Kai Zheng (JIRA)" <ji...@apache.org> on 2015/05/21 02:42:00 UTC
[jira] [Updated] (HADOOP-12010) Inter-operable between Java RS
erasure coder and native RS erasure coder
[ https://issues.apache.org/jira/browse/HADOOP-12010?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Kai Zheng updated HADOOP-12010:
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Description: It's natural and desired to support inter-operable between the two implemented RS raw erasure coders, in other words, data encoded in one coder (like {{RSRawEncoder}}) can be decoded using the other coder (like {{NativeRSRawDecoder}}). Without this, raw erasure coder will not be transparent to HDFS data. As such support isn't trivial and involves challenge work because the two implementations use different encode/decode matrix generation algorithms, better to have this separately. (was: It's natural and desired to support inter-operable between the two implemented RS raw erasure coders, in other words, data encoded in one coder (like {{RSRawEncoder}} can be decoded using the other coder (like {{NativeRSRawDecoder}}. Without this, raw erasure coder will not be transparent to HDFS data. As such support isn't trivial and involves challenge work because the two implementations use different encode/decode matrix generation algorithms, better to have this separately.)
> Inter-operable between Java RS erasure coder and native RS erasure coder
> ------------------------------------------------------------------------
>
> Key: HADOOP-12010
> URL: https://issues.apache.org/jira/browse/HADOOP-12010
> Project: Hadoop Common
> Issue Type: Sub-task
> Reporter: Kai Zheng
> Assignee: Kai Zheng
>
> It's natural and desired to support inter-operable between the two implemented RS raw erasure coders, in other words, data encoded in one coder (like {{RSRawEncoder}}) can be decoded using the other coder (like {{NativeRSRawDecoder}}). Without this, raw erasure coder will not be transparent to HDFS data. As such support isn't trivial and involves challenge work because the two implementations use different encode/decode matrix generation algorithms, better to have this separately.
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