Uma Maheswara Rao G created HDFS-12225:
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Summary: Optimize extended attributes for tracking SPS movements
Key: HDFS-12225
URL: https://issues.apache.org/jira/browse/HDFS-12225
Project: Hadoop HDFS
Issue Type: Sub-task
Reporter: Uma Maheswara Rao G
We have discussed to optimize number extended attributes and asked to report
separate JIRA while implementing [HDFS-11150 |
https://issues.apache.org/jira/browse/HDFS-11150?focusedCommentId=15766127&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15766127]
This is the JIRA to track that work
For the context, comment copied from HDFS-11150
{quote}
[~yuanbo] wrote : I've tried that before. There is an issue here if we only
mark the directory. When recovering from FsImage, the InodeMap isn't built up,
so we don't know the sub-inode of a given inode, in the end, We cannot add
these inodes to movement queue in FSDirectory#addToInodeMap, any
thoughts?{quote}
[~umamaheswararao] wrote: I got what you are saying. Ok for simplicity we can
add for all Inodes now. For this to handle 100%, we may need intermittent
processing, like first we should add them to some intermittentList while
loading fsImage, once fully loaded and when starting active services, we should
process that list and do required stuff. But it would add some additional
complexity may be. Let's do with all file inodes now and we can revisit later
if it is really creating issues. How about you raise a JIRA for it and think to
optimize separately?
{quote}
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