no way to compare when less than two revisions

Differences

This shows you the differences between two versions of the page.

@@ Line 1: / Line 1: @@
+====== hdfs fsck ======
+  * [[Hadoop]]
+  * [[hdfs]]
+** Check the health of a file **
+<code>
+hdfs fsck /user/root/sample.txt
+</code>
+<code>
+...
+The filesystem under path '/user/root/sample.txt' is HEALTHY
+</code>
+** Check the health of a file, and display the blocks as well **
+<code>
+hdfs fsck /user/root/sample.txt -files -blocks
+</code>
+<code>
+...
+/user/root/sample.txt 2633979 bytes, 1 block(s):  OK
+. BP-1693696885-172.17.0.2-1441734712805:blk_1073742259_1435 len=2633979 repl=3
+...
+</code>
+** Check the health of a file, display the blocks, and which nodes the file is on **
+<code>
+hdfs fsck /user/root/sample.txt -files -blocks -locations
+</code>
+<code>
+...
+. BP-1693696885-172.17.0.2-1441734712805:blk_1073742259_1435 len=2633979 repl=3 [172.17.0.2:50010, 172.17.0.3:50010, 172.17.0.4:50010]
+...
+</code>
+** Check the health of the entire filesystem **
+This must be run as user ''hdfs'' since ''root'' does not have full permissions.
+<code>
+hdfs fsck /
+</code>
+<code>
+...
+The filesystem under path '/' is HEALTHY
+</code>

Trace: