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https://issues.apache.org/jira/browse/HDFS-14703?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17341089#comment-17341089
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Konstantin Shvachko edited comment on HDFS-14703 at 5/10/21, 7:30 PM:
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Updated the POC patches to current trunk. There were indeed some missing parts
in the first patch.
See [^003-partitioned-inodeMap-POC.tar.gz].
Also created a remote branch called {{fgl}} in hadoop repo with both patches
applied to current trunk. [~xinglin] is working on adding {{create()}} call to
FGL. Right now only {{mkdirs()}} is supported.
was (Author: shv):
Updated the POC patches to current trunk. There were indeed some missing parts
in the first patch.
See [^003-partitioned-inodeMap-POC.tar.gz].
> NameNode Fine-Grained Locking via Metadata Partitioning
> -------------------------------------------------------
>
> Key: HDFS-14703
> URL: https://issues.apache.org/jira/browse/HDFS-14703
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: hdfs, namenode
> Reporter: Konstantin Shvachko
> Priority: Major
> Attachments: 001-partitioned-inodeMap-POC.tar.gz,
> 002-partitioned-inodeMap-POC.tar.gz, 003-partitioned-inodeMap-POC.tar.gz,
> NameNode Fine-Grained Locking.pdf, NameNode Fine-Grained Locking.pdf
>
>
> We target to enable fine-grained locking by splitting the in-memory namespace
> into multiple partitions each having a separate lock. Intended to improve
> performance of NameNode write operations.
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