org.apache.hadoop.hbase.io

Class TestFileLink

java.lang.Object

org.apache.hadoop.hbase.io.TestFileLink

public class TestFileLink
extends java.lang.Object

Test that FileLink switches between alternate locations when the current location moves or gets deleted.

Constructor Summary

Constructors

Constructor and Description
TestFileLink()

Method Summary

Modifier and Type	Method and Description
void	testEquals()
void	testHashCode()
void	testHDFSLinkReadDuringDelete() Test that link is still readable even when the current file gets deleted.
void	testHDFSLinkReadDuringRename() Test, on HDFS, that the FileLink is still readable even when the current file gets renamed.
void	testLinkReadWithMissingFile()
void	testLocalLinkReadDuringRename() Test, on a local filesystem, that the FileLink is still readable even when the current file gets renamed.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

TestFileLink

public TestFileLink()

Method Detail

testEquals

public void testEquals()

testHashCode

public void testHashCode()

testHDFSLinkReadDuringRename

public void testHDFSLinkReadDuringRename()
                                  throws java.lang.Exception

Test, on HDFS, that the FileLink is still readable even when the current file gets renamed.

Throws:

java.lang.Exception

testLinkReadWithMissingFile

public void testLinkReadWithMissingFile()
                                 throws java.lang.Exception

Throws:

java.lang.Exception

testLocalLinkReadDuringRename

public void testLocalLinkReadDuringRename()
                                   throws java.io.IOException

Test, on a local filesystem, that the FileLink is still readable even when the current file gets renamed.

Throws:

java.io.IOException

testHDFSLinkReadDuringDelete

public void testHDFSLinkReadDuringDelete()
                                  throws java.lang.Exception

Test that link is still readable even when the current file gets deleted. NOTE: This test is valid only on HDFS. When a file is deleted from a local file-system, it is simply 'unlinked'. The inode, which contains the file's data, is not deleted until all processes have finished with it. In HDFS when the request exceed the cached block locations, a query to the namenode is performed, using the filename, and the deleted file doesn't exists anymore (FileNotFoundException).

Throws:

java.lang.Exception