private void testConcurrentOnlineBackup() throws Exception {
String fileName = getBaseDir() + "/onlineBackup.h3";
String fileNameRestore = getBaseDir() + "/onlineRestore.h3";
final MVStore s = openStore(fileName);
final MVMap<Integer, byte[]> map = s.openMap("test");
final Random r = new Random();
Task t =
new Task() {
@Override
public void call() throws Exception {
while (!stop) {
for (int i = 0; i < 10; i++) {
map.put(i, new byte[100 * r.nextInt(100)]);
}
s.commit();
map.clear();
s.commit();
long len = s.getFileStore().size();
if (len > 1024 * 1024) {
// slow down writing a lot
Thread.sleep(200);
} else if (len > 20 * 1024) {
// slow down writing
Thread.sleep(20);
}
}
}
};
t.execute();
for (int i = 0; i < 10; i++) {
// System.out.println("test " + i);
s.setReuseSpace(false);
byte[] buff = readFileSlowly(s.getFileStore().getFile(), s.getFileStore().size());
s.setReuseSpace(true);
FileOutputStream out = new FileOutputStream(fileNameRestore);
out.write(buff);
MVStore s2 = openStore(fileNameRestore);
MVMap<Integer, byte[]> test = s2.openMap("test");
for (Integer k : test.keySet()) {
test.get(k);
}
s2.close();
// let it compact
Thread.sleep(10);
}
t.get();
s.close();
}
