[DRILL-1289] Creating storage plugin for "hdfs:///" failed with "Unable to create/ update plugin: myhdfs"

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.4.0
• Fix Version/s: 0.5.0
• Component/s: Client - HTTP

Environment

OS: Centos 6.4
HDFS: CDH5.1
Drill: 0.4.0

• Assignee: Unassigned
• Reporter: Hao Zhu
• Created: 12/Aug/14 18:09
• Updated: 05/May/15 21:16
• Resolved: 14/Aug/14 18:49

Description

In web GUI, I can successfully create a new storage plugin named "myhdfs" using "file:///":

{
  "type": "file",
  "enabled": true,
  "connection": "file:///",
  "workspaces": {
    "root": {
      "location": "/",
      "writable": false,
      "storageformat": null
    },
    "tmp": {
      "location": "/tmp",
      "writable": true,
      "storageformat": "csv"
    }
  },
  "formats": {
    "psv": {
      "type": "text",
      "extensions": [
        "tbl"
      ],
      "delimiter": "|"
    },
    "csv": {
      "type": "text",
      "extensions": [
        "csv"
      ],
      "delimiter": ","
    },
    "tsv": {
      "type": "text",
      "extensions": [
        "tsv"
      ],
      "delimiter": "\t"
    },
    "parquet": {
      "type": "parquet"
    },
    "json": {
      "type": "json"
    }
  }
}

However if I try to change "file:///" to "hdfs:///" to point to HDFS other than local file system, drill log errors out "[qtp416200645-67] DEBUG o.a.d.e.server.rest.StorageResources - Unable to create/ update plugin: myhdfs".

{
  "type": "file",
  "enabled": true,
  "connection": "hdfs:///",
  "workspaces": {
    "root": {
      "location": "/",
      "writable": false,
      "storageformat": null
    },
    "tmp": {
      "location": "/tmp",
      "writable": true,
      "storageformat": "csv"
    }
  },
  "formats": {
    "psv": {
      "type": "text",
      "extensions": [
        "tbl"
      ],
      "delimiter": "|"
    },
    "csv": {
      "type": "text",
      "extensions": [
        "csv"
      ],
      "delimiter": ","
    },
    "tsv": {
      "type": "text",
      "extensions": [
        "tsv"
      ],
      "delimiter": "\t"
    },
    "parquet": {
      "type": "parquet"
    },
    "json": {
      "type": "json"
    }
  }
}

On my cluster, I am using CDH5 hdfs, and it all client configurations are valid. For example, on the drillbit server:

[root@hdm ~]# hdfs dfs -ls /
Found 3 items
drwxr-xr-x   - hbase hbase               0 2014-08-04 22:55 /hbase
drwxrwxrwt   - hdfs  supergroup          0 2014-07-31 16:31 /tmp
drwxr-xr-x   - hdfs  supergroup          0 2014-07-11 12:06 /user

Is there anything wrong with the storage plugin syntax for HDFS?
If so, can drill log prints more debug info to show the reason why it failed?
Thanks.

Issue Links

• duplicates: DRILL-1290 Document Configuration Steps for Different Hadoop Distributions