joshelser opened a new pull request #1019: HBASE-23679 Use new FileSystem objects during bulk loads URL: https://github.com/apache/hbase/pull/1019 Undoes lots of fanciness about FileSystem caching because of an explicit bug that was present (FileSystem only closed on one out of N regionservers, and not every time), but also because the FS caching itself is dodgy and prone to error. Each BulkLoad request will now get its own FileSystem instance that it is responsible for closing. The change to HRegion is because ${hbase.rootdir}/data is `chmod 700` which means that a normal user cannot get the size of those files (you'll see lots of AccessDenied exceptions in the RS log). Using HRegionFilesystem instead keeps this from being an issue (reading the filesize as HBase instead of the user).
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