/**
* Verify that the current directory exists and that the previous directory does not exist. Verify
* that current hasn't been modified by comparing the checksum of all it's containing files with
* their original checksum. Note that we do not check that previous is removed on the DataNode
* because its removal is asynchronous therefore we have no reliable way to know when it will
* happen.
*/
void checkResult(String[] nameNodeDirs, String[] dataNodeDirs) throws IOException {
for (int i = 0; i < nameNodeDirs.length; i++) {
assertTrue(new File(nameNodeDirs[i], "current").isDirectory());
assertTrue(new File(nameNodeDirs[i], "current/VERSION").isFile());
assertTrue(new File(nameNodeDirs[i], "current/edits").isFile());
assertTrue(new File(nameNodeDirs[i], "current/fsimage").isFile());
assertTrue(new File(nameNodeDirs[i], "current/fstime").isFile());
}
for (int i = 0; i < dataNodeDirs.length; i++) {
assertEquals(
UpgradeUtilities.checksumContents(DATA_NODE, new File(dataNodeDirs[i], "current")),
UpgradeUtilities.checksumMasterContents(DATA_NODE));
}
for (int i = 0; i < nameNodeDirs.length; i++) {
assertFalse(new File(nameNodeDirs[i], "previous").isDirectory());
}
}
