Erik Krogen created HDFS-14462:
----------------------------------
Summary: WebHDFS throws "Error writing request body to server"
instead of NSQuotaExceededException
Key: HDFS-14462
URL: https://issues.apache.org/jira/browse/HDFS-14462
Project: Hadoop HDFS
Issue Type: Bug
Components: webhdfs
Affects Versions: 3.1.2, 2.7.7, 2.8.5, 3.0.3, 2.9.2, 3.2.0
Reporter: Erik Krogen
We noticed recently in our environment that, when writing data to HDFS via
WebHDFS, a quota exception is returned to the client as:
{code}
java.io.IOException: Error writing request body to server
at
sun.net.www.protocol.http.HttpURLConnection$StreamingOutputStream.checkError(HttpURLConnection.java:3536)
~[?:1.8.0_172]
at
sun.net.www.protocol.http.HttpURLConnection$StreamingOutputStream.write(HttpURLConnection.java:3519)
~[?:1.8.0_172]
at
java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
~[?:1.8.0_172]
at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140)
~[?:1.8.0_172]
at java.io.FilterOutputStream.flush(FilterOutputStream.java:140)
~[?:1.8.0_172]
at java.io.DataOutputStream.flush(DataOutputStream.java:123)
~[?:1.8.0_172]
{code}
It is entirely opaque to the user that this exception was caused because they
exceeded their quota. Yet in the DataNode logs:
{code}
2019-04-24 02:13:09,639 WARN org.apache.hadoop.hdfs.DFSClient: DataStreamer
Exception
org.apache.hadoop.hdfs.protocol.DSQuotaExceededException: The DiskSpace quota
of /foo/path/here is exceeded: quota = XXXXXXXXXXXX B = X TB but diskspace
consumed = XXXXXXXXXXXXXXXX B = X TB
at
org.apache.hadoop.hdfs.server.namenode.DirectoryWithQuotaFeature.verifyStoragespaceQuota(DirectoryWithQuotaFeature.java:211)
at
org.apache.hadoop.hdfs.server.namenode.DirectoryWithQuotaFeature.verifyQuota(DirectoryWithQuotaFeature.java:239)
{code}
This was on a 2.7.x cluster, but I verified that the same logic exists on
trunk. I believe we need to fix some of the logic within the
{{ExceptionHandler}} to add special handling for the quota exception.
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