/** Make sure that the quota is decremented correctly when a block is abandoned */ public void testQuotaUpdatedWhenBlockAbandoned() throws IOException { MiniDFSCluster cluster = new MiniDFSCluster(CONF, 2, true, null); FileSystem fs = cluster.getFileSystem(); DistributedFileSystem dfs = (DistributedFileSystem) fs; try { // Setting diskspace quota to 3MB dfs.setQuota(new Path("/"), FSConstants.QUOTA_DONT_SET, 3 * 1024 * 1024); // Start writing a file with 2 replicas to ensure each datanode has one. // Block Size is 1MB. String src = FILE_NAME_PREFIX + "test_quota1"; FSDataOutputStream fout = fs.create(new Path(src), true, 4096, (short) 2, 1024 * 1024); for (int i = 0; i < 1024; i++) { fout.writeByte(123); } // Shutdown one datanode, causing the block abandonment. cluster.getDataNodes().get(0).shutdown(); // Close the file, new block will be allocated with 2MB pending size. try { fout.close(); } catch (QuotaExceededException e) { fail("Unexpected quota exception when closing fout"); } } finally { try { fs.close(); } catch (Exception e) { } try { cluster.shutdown(); } catch (Exception e) { } } }