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HDFS-13622. mkdir should print the parent directory in the error message when parent directories do not exist. Contributed by Shweta.

This commit is contained in:
Xiao Chen 2018-07-26 10:23:30 -07:00
parent a19229594e
commit be150a17b1
3 changed files with 18 additions and 7 deletions
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13
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/shell/Mkdir.java
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@ -68,11 +68,14 @@ class Mkdir extends FsCommand {
@Override @Override
protected void processNonexistentPath(PathData item) throws IOException { protected void processNonexistentPath(PathData item) throws IOException {
// check if parent exists. this is complicated because getParent(a/b/c/) returns a/b/c, but if (!createParents) {
// we want a/b // check if parent exists. this is complicated because getParent(a/b/c/) returns a/b/c, but
if (!createParents && // we want a/b
!item.fs.exists(new Path(item.path.toString()).getParent())) { final Path itemPath = new Path(item.path.toString());
throw new PathNotFoundException(item.toString()); final Path itemParentPath = itemPath.getParent();
if (!item.fs.exists(itemParentPath)) {
throw new PathNotFoundException(itemParentPath.toString());
}
} }
if (!item.fs.mkdirs(item.path)) { if (!item.fs.mkdirs(item.path)) {
throw new PathIOException(item.toString()); throw new PathIOException(item.toString());

8
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDFSShell.java
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@ -721,6 +721,14 @@ public class TestDFSShell {
assertTrue(" -mkdir returned this is a file ", assertTrue(" -mkdir returned this is a file ",
(returned.lastIndexOf("not a directory") != -1)); (returned.lastIndexOf("not a directory") != -1));
out.reset(); out.reset();
argv[0] = "-mkdir";
argv[1] = "/testParent/testChild";
ret = ToolRunner.run(shell, argv);
returned = out.toString();
assertEquals(" -mkdir returned 1", 1, ret);
assertTrue(" -mkdir returned there is No file or directory but has testChild in the path",
(returned.lastIndexOf("testChild") == -1));
out.reset();
argv = new String[3]; argv = new String[3];
argv[0] = "-mv"; argv[0] = "-mv";
argv[1] = "/testfile"; argv[1] = "/testfile";

4
hadoop-hdfs-project/hadoop-hdfs/src/test/resources/testHDFSConf.xml
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@ -6183,11 +6183,11 @@
<comparators> <comparators>
<comparator> <comparator>
<type>RegexpComparator</type> <type>RegexpComparator</type>
<expected-output>mkdir: `dir0/dir1': No such file or directory</expected-output> <expected-output>.*mkdir:.*dir0': No such file or directory$</expected-output>
</comparator> </comparator>
</comparators> </comparators>
</test> </test>
<test> <!-- TESTED --> <test> <!-- TESTED -->
<description>mkdir: Test recreate of existing directory fails</description> <description>mkdir: Test recreate of existing directory fails</description>
<test-commands> <test-commands>