/**
* Tests that the edit log file meta data reading from ZooKeeper should be able to handle the
* NoNodeException. bkjm.getInputStream(fromTxId, inProgressOk) should suppress the
* NoNodeException and continue. HDFS-3441.
*/
@Test
public void testEditLogFileNotExistsWhenReadingMetadata() throws Exception {
URI uri = BKJMUtil.createJournalURI("/hdfsjournal-editlogfile");
NamespaceInfo nsi = newNSInfo();
BookKeeperJournalManager bkjm = new BookKeeperJournalManager(conf, uri, nsi);
bkjm.format(nsi);
try {
// start new inprogress log segment with txid=1
// and write transactions till txid=50
String zkpath1 = startAndFinalizeLogSegment(bkjm, 1, 50);
// start new inprogress log segment with txid=51
// and write transactions till txid=100
String zkpath2 = startAndFinalizeLogSegment(bkjm, 51, 100);
// read the metadata from ZK. Here simulating the situation
// when reading,the edit log metadata can be removed by purger thread.
ZooKeeper zkspy = spy(BKJMUtil.connectZooKeeper());
bkjm.setZooKeeper(zkspy);
Mockito.doThrow(new KeeperException.NoNodeException(zkpath2 + " doesn't exists"))
.when(zkspy)
.getData(zkpath2, false, null);
List<EditLogLedgerMetadata> ledgerList = bkjm.getLedgerList(false);
assertEquals("List contains the metadata of non exists path.", 1, ledgerList.size());
assertEquals(
"LogLedgerMetadata contains wrong zk paths.", zkpath1, ledgerList.get(0).getZkPath());
} finally {
bkjm.close();
}
}
@Before
public void setup() throws Exception {
zkc = BKJMUtil.connectZooKeeper();
}