/** * Find out where the edit log ends. * This will update the lastTxId of the EditLogFile or * mark it as corrupt if it is. */ public void validateLog() throws IOException { EditLogValidation val = EditLogFileInputStream.validateEditLog(file); this.lastTxId = val.getEndTxId(); this.hasCorruptHeader = val.hasCorruptHeader(); }
/** * Find out where the edit log ends. * This will update the lastTxId of the EditLogFile or * mark it as corrupt if it is. */ public void validateLog() throws IOException { EditLogValidation val = EditLogFileInputStream.validateEditLog(file); this.lastTxId = val.getEndTxId(); this.hasCorruptHeader = val.hasCorruptHeader(); }
@Test public void testValidateEditLogWithCorruptHeader() throws IOException { File testDir = new File(TEST_DIR, "testValidateEditLogWithCorruptHeader"); SortedMap<Long, Long> offsetToTxId = Maps.newTreeMap(); File logFile = prepareUnfinalizedTestEditLog(testDir, 2, offsetToTxId); RandomAccessFile rwf = new RandomAccessFile(logFile, "rw"); try { rwf.seek(0); rwf.writeLong(42); // corrupt header } finally { rwf.close(); } EditLogValidation validation = EditLogFileInputStream.validateEditLog(logFile); assertTrue(validation.hasCorruptHeader()); }
@Test public void testValidateEmptyEditLog() throws IOException { File testDir = new File(TEST_DIR, "testValidateEmptyEditLog"); SortedMap<Long, Long> offsetToTxId = Maps.newTreeMap(); File logFile = prepareUnfinalizedTestEditLog(testDir, 0, offsetToTxId); // Truncate the file so that there is nothing except the header and // layout flags section. truncateFile(logFile, 8); EditLogValidation validation = EditLogFileInputStream.validateEditLog(logFile); assertTrue(!validation.hasCorruptHeader()); assertEquals(HdfsConstants.INVALID_TXID, validation.getEndTxId()); }
Files.copy(logFile, logFileBak); EditLogValidation validation = EditLogFileInputStream.validateEditLog(logFile); assertTrue(!validation.hasCorruptHeader()); validation = EditLogFileInputStream.validateEditLog(logFile); long expectedEndTxId = (txId == (NUM_TXNS + 1)) ? NUM_TXNS : (NUM_TXNS + 1); validation = EditLogFileInputStream.validateEditLog(logFile); long expectedEndTxId = (txId == 0) ? HdfsConstants.INVALID_TXID : (txId - 1);