private void dumpLSNInfo(OutputStream os) {
try {
StringBuilder sb = new StringBuilder();
sb.append("\n>>dump_begin\t>>----- [LSNInfo] -----");
sb.append("\nappendLsn: " + appendLSN);
sb.append("\nflushLsn: " + flushLSN.get());
sb.append("\n>>dump_end\t>>----- [LSNInfo] -----\n");
os.write(sb.toString().getBytes());
} catch (Exception e) {
// ignore exception and continue dumping as much as possible.
if (IS_DEBUG_MODE) {
e.printStackTrace();
}
}
}
private void initializeLogManager(long nextLogFileId) {
emptyQ = new LinkedBlockingQueue<LogBuffer>(numLogPages);
flushQ = new LinkedBlockingQueue<LogBuffer>(numLogPages);
for (int i = 0; i < numLogPages; i++) {
emptyQ.offer(new LogBuffer(txnSubsystem, logPageSize, flushLSN));
}
appendLSN.set(initializeLogAnchor(nextLogFileId));
flushLSN.set(appendLSN.get());
if (LOGGER.isLoggable(Level.INFO)) {
LOGGER.info("LogManager starts logging in LSN: " + appendLSN);
}
appendChannel = getFileChannel(appendLSN.get(), false);
getAndInitNewPage();
logFlusher = new LogFlusher(this, emptyQ, flushQ);
futureLogFlusher =
txnSubsystem.getAsterixAppRuntimeContextProvider().getThreadExecutor().submit(logFlusher);
}