小编Gau*_*rav的帖子

我在apache spark上运行UIMA应用程序.UIMA RUTA需要处理数百万个页面才能进行计算.但是有一段时间我面临内存异常.它会在成功处理2000页时抛出异常,但有些时候会在500页上失败.

应用日志

Caused by: java.lang.OutOfMemoryError: Java heap space
        at org.apache.uima.internal.util.IntArrayUtils.expand_size(IntArrayUtils.java:57)
        at org.apache.uima.internal.util.IntArrayUtils.ensure_size(IntArrayUtils.java:39)
        at org.apache.uima.cas.impl.Heap.grow(Heap.java:187)
        at org.apache.uima.cas.impl.Heap.add(Heap.java:241)
        at org.apache.uima.cas.impl.CASImpl.ll_createFS(CASImpl.java:2844)
        at org.apache.uima.cas.impl.CASImpl.createFS(CASImpl.java:489)
        at org.apache.uima.cas.impl.CASImpl.createAnnotation(CASImpl.java:3837)
        at org.apache.uima.ruta.rule.RuleMatch.getMatchedAnnotations(RuleMatch.java:172)
        at org.apache.uima.ruta.rule.RuleMatch.getMatchedAnnotationsOf(RuleMatch.java:68)
        at org.apache.uima.ruta.rule.RuleMatch.getLastMatchedAnnotation(RuleMatch.java:73)
        at org.apache.uima.ruta.rule.ComposedRuleElement.mergeDisjunctiveRuleMatches(ComposedRuleElement.java:330)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueMatch(ComposedRuleElement.java:213)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueOwnMatch(ComposedRuleElement.java:362)
        at org.apache.uima.ruta.rule.ComposedRuleElement.fallbackContinue(ComposedRuleElement.java:459)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueMatch(ComposedRuleElement.java:225)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueOwnMatch(ComposedRuleElement.java:362)
        at org.apache.uima.ruta.rule.ComposedRuleElement.fallbackContinue(ComposedRuleElement.java:459)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueMatch(ComposedRuleElement.java:225)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueOwnMatch(ComposedRuleElement.java:362)
        at org.apache.uima.ruta.rule.ComposedRuleElement.fallbackContinue(ComposedRuleElement.java:459)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueMatch(ComposedRuleElement.java:225)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueOwnMatch(ComposedRuleElement.java:362)
        at org.apache.uima.ruta.rule.ComposedRuleElement.fallbackContinue(ComposedRuleElement.java:459)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueMatch(ComposedRuleElement.java:225)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueOwnMatch(ComposedRuleElement.java:362)
        at org.apache.uima.ruta.rule.ComposedRuleElement.fallbackContinue(ComposedRuleElement.java:459)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueMatch(ComposedRuleElement.java:225)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueOwnMatch(ComposedRuleElement.java:362)
        at org.apache.uima.ruta.rule.ComposedRuleElement.fallbackContinue(ComposedRuleElement.java:459)
        at org.apache.uima.ruta.rule.ComposedRuleElement.continueMatch(ComposedRuleElement.java:225) …

我在使用 RESTful Web 服务时遇到问题，我在 php 中有一个客户端，它在 Java 中调用了 RESTful 服务。在我的 RESTful 服务中，我有一个 Post 方法，它执行更新查询以修改具有 10000 条记录的表中的所有行。我想使用线程来做到这一点。有没有可能做到这一点？请帮助我，我是 Java 的新手。谢谢。

好的，我在我的服务层这样做：

for(int i = 0; i < 10; i++)
{
    startRow = i*1000;
    finalRow = i*1000 + 1000;
    Runnable process = new ProcessRecords(startRow , finalRow);
    executor.execute(process);                    
}

// Wait until all threads are finish
while (!executor.isTerminated()) {

}
System.out.println("\n All threads finished");

我正在调用这个类 (ProcessRecords) 来执行更新：

public ProcessRecords (int start, int final)
{
    startRow = start;
    finalRow = final;
}

@Override
public void …

是否有任何辅助方法或实用程序实际上给我两个字符串的联合.例如,如果我有两个字符串如下:

String s1 = "Isabella,tom,hardy";
String s2 = "Isabella,tom,hardy,victor,smith";

我正在寻找一个解决方案,它将以两个字符串作为输入并输出结果如下:

General syntax:  s1.{method/utility}(s2);
output : Isabella,tom,hardy,victor,smith