finalmachine created LOGBACK-1310:
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Summary: TimeBasedRollingPolicy property totalSizeCap perform bad
Key: LOGBACK-1310
URL: https://jira.qos.ch/browse/LOGBACK-1310
Project: logback
Issue Type: Bug
Components: logback-classic
Affects Versions: 1.2.3
Environment: windows 7 x64
Java 8u131
Reporter: finalmachine
Assignee: Logback dev list
Attachments: pic1.PNG
I use this appender
<{color:#000080}appender
{color}{color:#0000ff}name{color}{color:#008000}="test"
{color}{color:#0000ff}class{color}{color:#008000}="ch.qos.logback.core.rolling.RollingFileAppender">{color}
<{color:#000080}prudent{color}>true</{color:#000080}prudent{color}>
<{color:#000080}rollingPolicy
{color}{color:#0000ff}class{color}{color:#008000}="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"{color}>
<{color:#000080}fileNamePattern{color}>./logs/free-%d\{yyyy-MM-dd}.log</{color:#000080}fileNamePattern{color}>
<{color:#000080}cleanHistoryOnStart{color}>true</{color:#000080}cleanHistoryOnStart{color}>
<{color:#000080}maxHistory{color}>30</{color:#000080}maxHistory{color}>
<{color:#000080}totalSizeCap{color}>70MB</{color:#000080}totalSizeCap{color}>
</{color:#000080}rollingPolicy{color}>
<{color:#000080}encoder{color}>
<{color:#000080}pattern{color}>%d\{yyyy-MM-dd HH:mm:ss} [%thread]
(%level) %C(%F:%L) %n%msg%n</{color:#000080}pattern{color}>
</{color:#000080}encoder{color}>
</{color:#000080}appender{color}>
then I write a test java code
{color:#333333}public static void main(String[] args) \{{color}
{color:#333333} Logger logger = LoggerFactory.getLogger("test");{color}
{color:#333333} for (int i = 0; i < 1000000; i++) \{{color}
{color:#333333} logger.info(UUID.randomUUID().toString());{color}
{color:#333333} }{color}
}
I run the program first time,It give me a logger file 114MB,it is very sad
because the size is great than 70MB as conf file.
{color:#333333}in the [https://logback.qos.ch/manual/appenders.html] you say
the "total size cap" restriction applied second.{color}
so I delete some log to make the log file size 12MB, and I rename the file name
as it is created yesteday, then I run the java program again, when total size
great than 70MB, the old log file is not delete, and the result is in
Attachment pic1.PNG.
I‘d like discuss the requrement of
{color:#008000}TimeBasedRollingPolicy{color}, I use it to split log by day, at
the same time prevent the total log file great than the disk size or the server
will wrong, so I need logback to hold all files which macthes
{color:#000080}fileNamePattern{color} within disk size.
now I just use SizeAndTimeBasedRollingPolicy, but I dislike the %i.
So maybe this bug is more like a new feather, Hope logback do better.
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