即使没有什么可写的，Log4j 也会继续写入日志文件？

Question

我在 tomcat 服务器上部署了一个 Web 应用程序。我使用 log4j 进行日志记录。它运作良好。但问题是当没有任何事情发生时，log4j 不断地向日志文件写入以下内容：

[DEBUG] 2016-03-09 09:13:46,617 com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1f3e145e -- Running DeadlockDetector[Exiting. No pending tasks.]
[DEBUG] 2016-03-09 09:13:56,620 com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1f3e145e -- Running DeadlockDetector[Exiting. No pending tasks.]
[DEBUG] 2016-03-09 09:14:06,623 com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1f3e145e -- Running DeadlockDetector[Exiting. No pending tasks.]
[DEBUG] 2016-03-09 09:14:16,626 com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1f3e145e -- Running DeadlockDetector[Exiting. No pending tasks.]
[DEBUG] 2016-03-09 09:14:26,629 com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1f3e145e -- Running DeadlockDetector[Exiting. No pending tasks.]
[DEBUG] 2016-03-09 09:14:36,632 com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1f3e145e -- Running DeadlockDetector[Exiting. No pending tasks.]
[DEBUG] 2016-03-09 09:14:46,635 com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1f3e145e -- Running DeadlockDetector[Exiting. No pending tasks.]
[DEBUG] 2016-03-09 09:14:56,638 com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1f3e145e -- Running DeadlockDetector[Exiting. No pending tasks.]
[DEBUG] 2016-03-09 09:15:06,641 com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1f3e145e -- Running DeadlockDetector[Exiting. No pending tasks.]
[DEBUG] 2016-03-09 09:15:16,644 com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1f3e145e -- Running DeadlockDetector[Exiting. No pending tasks.]
[DEBUG] 2016-03-09 09:15:26,647 com.mchange.v2.async.ThreadPoolAsynchronousRunner - com.mchange.v2.async.ThreadPoolAsynchronousRunner$DeadlockDetector@1f3e145e -- Running DeadlockDetector[Exiting. No pending tasks.]

我不希望这些消息出现在日志文件中。

有解决办法吗？

Answer 1

除了上面的消息之外，log4j 在什么都没发生的时候也在写一些其他的消息。所以日志文件越来越大，看起来很尴尬。我将阈值从 DEBUG 更改为 INFO。它解决了我的问题，我的日志现在看起来很干净。

即使没有什么可写的，Log4j 也会继续写入日志文件？

Log4j keep on writing to the log file even there is nothing to be written?

tomcat

log4j