Package org.apache.hadoop.hbase.wal

Class TestParsePartialWALFile

java.lang.Object

org.apache.hadoop.hbase.wal.TestParsePartialWALFile

public class TestParsePartialWALFile
extends Object

In this test, we write a small WAL file first, and then generate partial WAL file which length is in range [0, fileLength)(we test all the possible length in the range), to see if we can successfully get the completed entries, and also get an EOF at the end.

It is very important to make sure 3 things:

• We do not get incorrect entries. Otherwise there will be data corruption.
• We can get all the completed entries, i.e, we do not miss some data. Otherwise there will be data loss.
• We will get an EOF finally, instead of a general IOException. Otherwise the split or replication will be stuck.

Field Summary

Fields

Modifier and Type	Field	Description
static final HBaseClassTestRule	CLASS_RULE
private static byte[]	FAMILY
private static org.apache.hadoop.fs.FileSystem	FS
private static byte[]	QUAL
private static org.apache.hadoop.hbase.client.RegionInfo	RI
private static byte[]	ROW
private static org.apache.hadoop.hbase.TableName	TN
private static final HBaseCommonTestingUtility	UTIL
private static byte[]	VALUE

Constructor Summary

Constructors

Constructor	Description
TestParsePartialWALFile()

Method Summary

Modifier and Type	Method	Description
private void	assertEntryEquals(org.apache.hadoop.hbase.wal.WAL.Entry entry, int index)
private org.apache.hadoop.fs.Path	generateBrokenWALFile(byte[] content, int length)
static void	setUp()
static void	tearDown()
void	testPartialParse()
private void	testReadEntry(org.apache.hadoop.fs.Path file, int entryCount)

Methods inherited from class java.lang.Object

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

Field Details

CLASS_RULE

public static final HBaseClassTestRule CLASS_RULE

UTIL

private static final HBaseCommonTestingUtility UTIL

FS

private static org.apache.hadoop.fs.FileSystem FS

TN

private static org.apache.hadoop.hbase.TableName TN

RI

private static org.apache.hadoop.hbase.client.RegionInfo RI

ROW

private static byte[] ROW

FAMILY

private static byte[] FAMILY

QUAL

private static byte[] QUAL

VALUE

private static byte[] VALUE

Constructor Details

TestParsePartialWALFile

public TestParsePartialWALFile()

Method Details

setUp

public static void setUp()
                  throws IOException

Throws:

IOException

tearDown

public static void tearDown()

generateBrokenWALFile

private org.apache.hadoop.fs.Path generateBrokenWALFile(byte[] content,
 int length)
                                                 throws IOException

Throws:

IOException

assertEntryEquals

private void assertEntryEquals(org.apache.hadoop.hbase.wal.WAL.Entry entry,
 int index)

testReadEntry

private void testReadEntry(org.apache.hadoop.fs.Path file,
 int entryCount)
                    throws IOException

Throws:

IOException

testPartialParse

public void testPartialParse()
                      throws Exception

Throws:

Exception