Maven 构建 的坑

1，

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.12.4:test (default-test) on project pbh-cmpt: Execution default-test of goal org.apache.maven.plugins:maven-surefire-plugin:2.12.4:test failed: The forked VM terminated without saying properly goodbye. VM crash or System.exit called ? -> [Help 1]
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:

[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutionException 

原因： 构建时

maven-surefire-plugin  插件 执行时 内存不够；

解决： 配置插件的 执行内存

2，
如下：部分异常内容

Tests run: 1, Failures: 1, Errors: 0, Skipped: 0, Time elapsed: 1.006 sec <<< FAILURE!
dealInfoData(com.shfb.pbh.cmpt.SavePbhComponentTest)  Time elapsed: 0.964 sec  <<< FAILURE!
java.lang.AssertionError: java.io.FileNotFoundException: ./ehcache/ehcache_auto_created2787906805026561406diskstore/%0053%0059%0053_%0046%004f%0052%004d_%0043%0041%0043%0048%0045.data (打开的文件过多)

at net.sf.ehcache.Cache.initialise(Cache.java:1103)
	at net.sf.ehcache.CacheManager.initializeEhcache(CacheManager.java:1306)
	at net.sf.ehcache.CacheManager.addCacheNoCheck(CacheManager.java:1337)
	at net.sf.ehcache.CacheManager.addCache(CacheManager.java:1235)
	at net.sf.ehcache.CacheManager.addCache(CacheManager.java:1202)

Caused by: java.io.FileNotFoundException: ./ehcache/ehcache_auto_created2787906805026561406diskstore/%0053%0059%0053_%0046%004f%0052%004d_%0043%0041%0043%0048%0045.data (打开的文件过多)
	at java.io.RandomAccessFile.open(Native Method)
	at java.io.RandomAccessFile.<init>(RandomAccessFile.java:241)
	at com.terracottatech.offheapstore.disk.paging.MappedPageSource.getWritableChannel(MappedPageSource.java:138)
	... 69 more

第一眼看到“打开文件过多” 以为是环境问题；
执行如下命令，查看liunx 支持最大打开文件 数；
ulimit -n   （默认 1024）
设置最大数：
若要 临时 改变这两个参数值，可以使用 ulimit -n 10240 ,ulimit -u 10240,
若要 长久 改变这两个参数值，就要修改/ect/security/limits.conf,在文件中加上两行：
* - nofile 102400
* - nproc 102400

调整后依旧报相同错误；仔细查看异常内容，

又看了一遍 ecache 的配置（http://www.cnblogs.com/cnjava/archive/2012/08/03/2621282.html）

（最后改变了，缓存策略，不使用 ecache）