Author: tedyu
Date: Mon Feb 13 18:45:01 2012
New Revision: 1243648

URL: http://svn.apache.org/viewvc?rev=1243648&view=rev
Log:
HBASE-5327  Print a message when an invalid hbase.rootdir is passed (Jimmy 
Xiang)

Modified:
    hbase/branches/0.92/CHANGES.txt
    
hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/master/MasterFileSystem.java

Modified: hbase/branches/0.92/CHANGES.txt
URL: 
http://svn.apache.org/viewvc/hbase/branches/0.92/CHANGES.txt?rev=1243648&r1=1243647&r2=1243648&view=diff
==============================================================================
--- hbase/branches/0.92/CHANGES.txt (original)
+++ hbase/branches/0.92/CHANGES.txt Mon Feb 13 18:45:01 2012
@@ -962,6 +962,7 @@ Release 0.90.6 - Unreleased
    HBASE-5060  HBase client is blocked forever (Jinchao)
    HBASE-5009  Failure of creating split dir if it already exists prevents 
splits from happening further
    HBASE-5041  Major compaction on non existing table does not throw error 
(Shrijeet)
+   HBASE-5327  Print a message when an invalid hbase.rootdir is passed (Jimmy 
Xiang)
 
 Release 0.90.5 - Unreleased
 

Modified: 
hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/master/MasterFileSystem.java
URL: 
http://svn.apache.org/viewvc/hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/master/MasterFileSystem.java?rev=1243648&r1=1243647&r2=1243648&view=diff
==============================================================================
--- 
hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/master/MasterFileSystem.java
 (original)
+++ 
hbase/branches/0.92/src/main/java/org/apache/hadoop/hbase/master/MasterFileSystem.java
 Mon Feb 13 18:45:01 2012
@@ -109,8 +109,7 @@ public class MasterFileSystem {
     }
     // setup the filesystem variable
     // set up the archived logs path
-    this.oldLogDir = new Path(this.rootdir, HConstants.HREGION_OLDLOGDIR_NAME);
-    createInitialFileSystemLayout();
+    this.oldLogDir = createInitialFileSystemLayout();
   }
 
   /**
@@ -123,14 +122,18 @@ public class MasterFileSystem {
    * </ol>
    * Idempotent.
    */
-  private void createInitialFileSystemLayout() throws IOException {
+  private Path createInitialFileSystemLayout() throws IOException {
     // check if the root directory exists
     checkRootDir(this.rootdir, conf, this.fs);
 
+    Path oldLogDir = new Path(this.rootdir, HConstants.HREGION_OLDLOGDIR_NAME);
+
     // Make sure the region servers can archive their old logs
-    if(!this.fs.exists(this.oldLogDir)) {
-      this.fs.mkdirs(this.oldLogDir);
+    if(!this.fs.exists(oldLogDir)) {
+      this.fs.mkdirs(oldLogDir);
     }
+
+    return oldLogDir;
   }
 
   public FileSystem getFileSystem() {
@@ -323,21 +326,30 @@ public class MasterFileSystem {
     FSUtils.waitOnSafeMode(c, c.getInt(HConstants.THREAD_WAKE_FREQUENCY,
         10 * 1000));
     // Filesystem is good. Go ahead and check for hbase.rootdir.
-    if (!fs.exists(rd)) {
-      fs.mkdirs(rd);
-      // DFS leaves safe mode with 0 DNs when there are 0 blocks.
-      // We used to handle this by checking the current DN count and waiting 
until
-      // it is nonzero. With security, the check for datanode count doesn't 
work --
-      // it is a privileged op. So instead we adopt the strategy of the 
jobtracker
-      // and simply retry file creation during bootstrap indefinitely. As soon 
as
-      // there is one datanode it will succeed. Permission problems should have
-      // already been caught by mkdirs above.
-      FSUtils.setVersion(fs, rd, c.getInt(HConstants.THREAD_WAKE_FREQUENCY,
-        10 * 1000));
-    } else {
-      // as above
-      FSUtils.checkVersion(fs, rd, true, 
c.getInt(HConstants.THREAD_WAKE_FREQUENCY,
-        10 * 1000));
+    try {
+      if (!fs.exists(rd)) {
+        fs.mkdirs(rd);
+        // DFS leaves safe mode with 0 DNs when there are 0 blocks.
+        // We used to handle this by checking the current DN count and waiting 
until
+        // it is nonzero. With security, the check for datanode count doesn't 
work --
+        // it is a privileged op. So instead we adopt the strategy of the 
jobtracker
+        // and simply retry file creation during bootstrap indefinitely. As 
soon as
+        // there is one datanode it will succeed. Permission problems should 
have
+        // already been caught by mkdirs above.
+        FSUtils.setVersion(fs, rd, c.getInt(HConstants.THREAD_WAKE_FREQUENCY,
+          10 * 1000));
+      } else {
+        if (!fs.isDirectory(rd)) {
+          throw new IllegalArgumentException(rd.toString() + " is not a 
directory");
+        }
+        // as above
+        FSUtils.checkVersion(fs, rd, true, 
c.getInt(HConstants.THREAD_WAKE_FREQUENCY,
+          10 * 1000));
+      }
+    } catch (IllegalArgumentException iae) {
+      LOG.fatal("Please fix invalid configuration for "
+        + HConstants.HBASE_DIR + " " + rd.toString(), iae);
+      throw iae;
     }
     // Make sure cluster ID exists
     if (!FSUtils.checkClusterIdExists(fs, rd, c.getInt(


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