tomicooler commented on code in PR #6771:
URL: https://github.com/apache/hadoop/pull/6771#discussion_r1579096249
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/container-executor.c:
##########
@@ -242,8 +242,8 @@ static int write_pid_to_cgroup_as_root(const char*
cgroup_file, pid_t pid) {
strerror(errno));
rc = -1;
goto cleanup;
- } else if (buf.f_type != CGROUP_SUPER_MAGIC) {
- fprintf(LOGFILE, "Pid file %s is not located on cgroup filesystem\n",
cgroup_file);
+ } else if (buf.f_type != CGROUP_SUPER_MAGIC || buf.f_type !=
CGROUP2_SUPER_MAGIC) {
Review Comment:
https://docs.kernel.org/admin-guide/cgroup-v2.html
It should come from
https://github.com/torvalds/linux/blob/v4.6/include/uapi/linux/magic.h#L58
which we include, probably it is an old kernel.
Could be fixed with:
```
#ifndef CGROUP2_SUPER_MAGIC
#define CGROUP2_SUPER_MAGIC 0x63677270
#endif
```
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