Wei-Chiu Chuang created HDFS-15052:
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Summary: WebHDFS getTrashRoot leads to OOM due to FileSystem
object creation
Key: HDFS-15052
URL: https://issues.apache.org/jira/browse/HDFS-15052
Project: Hadoop HDFS
Issue Type: Bug
Components: webhdfs
Affects Versions: 3.0.0-alpha2, 2.9.0
Reporter: Wei-Chiu Chuang
Quoting [~daryn] in HDFS-10756 :
{quote}Surprised nobody has discovered this will lead to an inevitable OOM in
the NN. The NN should not be creating filesystems to itself, and must never
create filesystems in a remote user's context or the cache will explode.
{quote}
I guess the problem lies in side NamenodeWebHdfsMethods#getTrashRoot
{code:java}
private static String getTrashRoot(String fullPath,
Configuration conf) throws IOException {
FileSystem fs = FileSystem.get(conf != null ? conf : new
Configuration());
return fs.getTrashRoot(
new org.apache.hadoop.fs.Path(fullPath)).toUri().getPath();
}
{code}
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