Simon Prewo created HADOOP-15734:
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Summary: Error Message "Invalid docker rw mount" not helpful
Key: HADOOP-15734
URL: https://issues.apache.org/jira/browse/HADOOP-15734
Project: Hadoop Common
Issue Type: Bug
Affects Versions: 3.1.1, 2.9.1
Reporter: Simon Prewo
A user recieves the error message _Invalid docker rw mount_ when a container
tries to mount a directory which is not configured in property
*docker.allowed.rw-mounts*.
{code:java}
Invalid docker rw mount
'/usr/local/hadoop/logs/userlogs/application_1536476159258_0004/container_1536476159258_0004_02_000001:/usr/local/hadoop/logs/userlogs/application_1536476159258_0004/container_1536476159258_0004_02_000001',
realpath=/usr/local/hadoop/logs/userlogs/application_1536476159258_0004/container_1536476159258_0004_02_000001{code}
The error message makes the user think "It is not possible due to a docker
issue". My suggestion would be to put there a message like *Configuration of
the container executor does not allow mounting directory.*.
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/utils/docker-util.c
CURRENT:
{code:java}
permitted_rw = check_mount_permitted((const char **) permitted_rw_mounts,
mount_src);
permitted_ro = check_mount_permitted((const char **) permitted_ro_mounts,
mount_src);
if (permitted_ro == -1 || permitted_rw == -1) {
fprintf(ERRORFILE, "Invalid docker mount '%s', realpath=%s\n", values[i],
mount_src);
...
{code}
NEW:
{code:java}
permitted_rw = check_mount_permitted((const char **) permitted_rw_mounts,
mount_src);
permitted_ro = check_mount_permitted((const char **) permitted_ro_mounts,
mount_src);
if (permitted_ro == -1 || permitted_rw == -1) {
fprintf(ERRORFILE, "Configuration of the container executor does not
allow mounting directory '%s', realpath=%s\n", values[i], mount_src);
...
{code}
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