[ACCUMULO-3041] Unhandled null pointer exception in BulkImport.createNewBulkDir()

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Not A Problem
• Affects Version/s: 1.6.0
• Component/s: master
• Assignee: Unassigned
• Reporter: Tristen Georgiou
• Created: 01/Aug/14 23:10
• Updated: 28/May/21 15:03
• Resolved: 28/May/21 15:03

Description

File:
org.apache.accumulo.master.tableOps.BulkImport
line 188

BulkImport.java

String tableDir = fs.matchingFileSystem(new Path(sourceDir), ServerConstants.getTablesDirs()).toString();

if (tableDir == null)
      throw new IllegalStateException(sourceDir + " is not in a known namespace");
Path directory = new Path(tableDir + "/" + tableId);

It is possible that fs.matchingFileSystem() can return null, so calling toString() will cause a NullPointerException. (See org.apache.accumulo.server.fs.VolumeManagerImpl on line 512)

The following lines check for a null return, but by this time its too late.

I think in my case, I've mis-configured something such that the function is unable to get a matching file system, so I will probably be able to get around this without a code update.

Perhaps the fix is as simple as this:

BulkImport.java

String tableDir = fs.matchingFileSystem(new Path(sourceDir), ServerConstants.getTablesDirs());

if (tableDir == null)
      throw new IllegalStateException(sourceDir + " is not in a known namespace");
Path directory = new Path(tableDir.toString() + "/" + tableId);