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https://issues.apache.org/jira/browse/HADOOP-4680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12648894#action_12648894 ]
Pete Wyckoff commented on HADOOP-4680:
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This is the fix but I still haven't looked at why the unit test didn't catch it.
{code}
- st->f_bavail = cap/bsize;
+ st->f_bavail = (cap-used)/bsize;
{code}
I used this to debug:
{code}
#include <sys/statvfs.h>
#include <stdio.h>
int main(int ac, char ** av) {
struct statvfs b;
statvfs(av[1], &b);
printf("%ld\n",b.f_bsize);
printf("%ld\n",b.f_frsize);
printf("%ld\n",b.f_blocks);
printf("%ld\n",b.f_bfree);
printf("%ld\n",b.f_bavail);
printf("%ld\n",b.f_files);
printf("%ld\n",b.f_ffree);
printf("%ld\n",b.f_favail);
printf("%ld\n",b.f_fsid);
printf("%ld\n",b.f_flag);
printf("%ld\n",b.f_namemax);
}
{code}
fuse-dfs - df -kh on hdfs mount shows much less %used than the dfs UI
---------------------------------------------------------------------
Key: HADOOP-4680
URL:
https://issues.apache.org/jira/browse/HADOOP-4680Project: Hadoop Core
Issue Type: Bug
Components: contrib/fuse-dfs
Reporter: Pete Wyckoff
i.e., statfs broken.
This used to show the correct amount and now is showing wrong numbers in production environment.
Yet, the unit test for this passes??
This is the trunk version of fuse-dfs against 0.17 libhdfs and hadoop.
Unknown if this affects 0.18.2 or 19.1 or trunk but i suspect it does.
admittedly fuse-dfs isn't supported against hadoop 17 but I am confident that it is likely broken in all versions.
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