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AbstractRegistry lock problem

See original GitHub issue

环境：

suse linux
dubbo 2.5.3

dubbo启动时会报：

2014-08-29 19:13:52,325 WARN  com.alibaba.dubbo.registry.zookeeper.ZookeeperRegistry.doSaveProperties:221 -  [DUBBO] Failed to save registry store file, cause: Can not lock the registry cache file /uniiof/tstusers/tstweg02/.dubbo/dubbo-registry-133.0.192.193.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties, dubbo version: 2.5.3, current host: 127.0.0.1
java.io.IOException: Can not lock the registry cache file /uniiof/tstusers/tstweg02/.dubbo/dubbo-registry-133.0.192.193.cache, ignore and retry later, maybe multi java process use the file, please config: dubbo.registry.file=xxx.properties
    at com.alibaba.dubbo.registry.support.AbstractRegistry.doSaveProperties(AbstractRegistry.java:193)
    at com.alibaba.dubbo.registry.support.AbstractRegistry$SaveProperties.run(AbstractRegistry.java:150)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:722)

从异常看，是多个线程都要写信息，导致不能获取锁，同时也不尝试再次获取

Issue Analytics

State:
Created 9 years ago
Comments:15

Top GitHub Comments

4reactions

justeincommented, Apr 15, 2016

@dudi123456 @Xiaobaxi 解决了，出现这个的原因是服务向ZK注册的同时，会缓存Consumer的列表，写入user.home/.dubbo/dubbo-registry-" + url.getHost() + ".cache 这个文件，当在同一个机器上启动多个Provider的时候，就会出现文件锁争用的问题，报上面这个错误。解决办法：服务模块各自缓存自己的cache文件，在<dubbo:registry />中加入 file=“dubboregistry/dubbo-registry.properties” ，这样就会在bin目录下生成dubboregistry这个目录，cache文件就缓存在这个里边了。

0reactions

yekuicommented, Oct 22, 2018

2018-10-15 22:55:24,780 WARN [DubboSaveRegistryCache-thread-1] c.a.d.c.u.DubboLogger - [DUBBO] Failed to save registry store file, cause: null, dubbo version: 3.2.0, current host: xxx java.nio.channels.OverlappingFileLockException: null at sun.nio.ch.SharedFileLockTable.checkList(FileLockTable.java:255) at sun.nio.ch.SharedFileLockTable.add(FileLockTable.java:152) at sun.nio.ch.FileChannelImpl.tryLock(FileChannelImpl.java:1108) at java.nio.channels.FileChannel.tryLock(FileChannel.java:1155) at com.alibaba.dubbo.registry.support.AbstractRegistry.doSaveProperties(AbstractRegistry.java:187) at com.alibaba.dubbo.registry.support.AbstractRegistry$SaveProperties.run(AbstractRegistry.java:146) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)

这个应该不是多进程并发导致的吧

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