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Posted to hdfs-issues@hadoop.apache.org by "Shilun Fan (Jira)" <ji...@apache.org> on 2024/01/27 03:16:00 UTC

[jira] [Updated] (HDFS-15493) Update block map and name cache in parallel while loading fsimage.

     [ https://issues.apache.org/jira/browse/HDFS-15493?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shilun Fan updated HDFS-15493:
------------------------------
    Affects Version/s: 3.3.1
                       3.4.0

> Update block map and name cache in parallel while loading fsimage.
> ------------------------------------------------------------------
>
>                 Key: HDFS-15493
>                 URL: https://issues.apache.org/jira/browse/HDFS-15493
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>    Affects Versions: 3.3.1, 3.4.0
>            Reporter: Chengwei Wang
>            Assignee: Chengwei Wang
>            Priority: Major
>             Fix For: 3.3.1, 3.4.0
>
>         Attachments: HDFS-15493.001.patch, HDFS-15493.002.patch, HDFS-15493.003.patch, HDFS-15493.004.patch, HDFS-15493.005.patch, HDFS-15493.006.patch, HDFS-15493.007.patch, HDFS-15493.008.patch, fsimage-loading.log
>
>
> While loading INodeDirectorySection of fsimage, it will update name cache and block map after added inode file to inode directory. It would reduce time cost of fsimage loading to enable these steps run in parallel.
> In our test case, with patch HDFS-13694 and HDFS-14617, the time cost to load fsimage (220M files & 240M blocks) is 470s, with this patch , the time cost reduce to 410s.



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