[HDFS-5215] dfs.datanode.du.reserved is not considered while computing available space

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7.0, 3.0.0-alpha1
• Fix Version/s: 2.8.0, 2.7.1, 3.0.0-alpha1
• Component/s: datanode
• Assignee: Brahma Reddy Battula
• Reporter: Brahma Reddy Battula
• Created: 17/Sep/13 02:08
• Updated: 06/Jan/17 00:59
• Resolved: 08/Apr/15 02:44

Description

public long getAvailable() throws IOException {
    long remaining = getCapacity()-getDfsUsed();
    long available = usage.getAvailable();
    if (remaining > available) {
      remaining = available;
    }
    return (remaining > 0) ? remaining : 0;
  } 

Here we are not considering the reserved space while getting the Available Space.

Issue Links

• breaks: HDFS-9038 DFS reserved space is erroneously counted towards non-DFS used.
• duplicates: HDFS-8045 Incorrect calculation of NonDfsUsed and Remaining
• is duplicated by: HDFS-8045 Incorrect calculation of NonDfsUsed and Remaining