Java Spring批处理JSR-352重新启动错误的分区
我使用SpringBatch JSR-352实现创建了一个简单的批处理。批处理使用PartitionMapper为每个区块注入单独的属性。 根据JSR-352规范(当partitionsOverride=False时),当一个分区块失败并且批重新启动时,只有失败的分区块应该重新启动 例如,如果我们有3个分区:分区0、分区1和分区2。 如果partition1和partition2失败,批处理只应使用其自己的批处理属性重新启动partition1和partition2 但是,我注意到,当使用Spring批处理JSR-352实现(最新版本3.0.3.Release)时,重新启动批处理将重新启动partition0和partition1,而不是partition1和partition2。因此,它正确地检测到两个分区出现故障,但错误地重新启动了前(两)个分区,而不是应该重新启动的故障分区 这是Spring批处理实现中的错误还是我遗漏了什么 见JSR-352文件第10.8.5节: 以下是我使用的代码: /META-INF/batch jobs/sampleBatch.xmlJava Spring批处理JSR-352重新启动错误的分区,java,spring,spring-batch,jsr,Java,Spring,Spring Batch,Jsr,我使用SpringBatch JSR-352实现创建了一个简单的批处理。批处理使用PartitionMapper为每个区块注入单独的属性。 根据JSR-352规范(当partitionsOverride=False时),当一个分区块失败并且批重新启动时,只有失败的分区块应该重新启动 例如,如果我们有3个分区:分区0、分区1和分区2。 如果partition1和partition2失败,批处理只应使用其自己的批处理属性重新启动partition1和partition2 但是,我注意到,当使用Spr
<?xml version="1.0" encoding="UTF-8"?>
<job id="sampleBatch" version="1.0" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/jobXML_1_0.xsd">
<step id="sampleStep">
<chunk item-count="100">
<reader ref="com.springapp.batch.SampleReader">
<properties>
<property name="sample" value="#{partitionPlan['sample']}"/>
</properties>
</reader>
<writer ref="com.springapp.batch.SampleWriter">
<properties>
<property name="sample" value="#{partitionPlan['sample']}"/>
</properties>
</writer>
</chunk>
<partition>
<mapper ref="com.springapp.batch.SamplePartitionMapper"/>
</partition>
</step>
</job>
com.springapp.batch.SamplePartitionMapper:
package com.springapp.batch;
import java.util.Properties;
import javax.batch.api.partition.PartitionMapper;
import javax.batch.api.partition.PartitionPlan;
import javax.batch.api.partition.PartitionPlanImpl;
public class SamplePartitionMapper implements PartitionMapper {
@Override
public PartitionPlan mapPartitions() throws Exception {
final PartitionPlan partitionPlan = new PartitionPlanImpl();
int size = 3;
Properties[] partitionProps = new Properties[size];
for (int i=0; i<size; i++) {
final Properties properties = new Properties();
properties.put("sample", ""+i);
partitionProps[i] = properties;
System.out.println("mapPartitions: " + i);
}
partitionPlan.setThreads(1);
partitionPlan.setPartitions(partitionProps.length);
partitionPlan.setPartitionProperties(partitionProps);
return partitionPlan;
}
}
package com.springapp.batch;
导入java.util.Properties;
导入javax.batch.api.partition.PartitionMapper;
导入javax.batch.api.partition.PartitionPlan;
导入javax.batch.api.partition.PartitionPlanImpl;
公共类SamplePartitionMapper实现PartitionMapper{
@凌驾
public PartitionPlan mapPartitions()引发异常{
final PartitionPlan PartitionPlan=新的PartitionPlanImpl();
int size=3;
Properties[]partitionProps=新属性[大小];
对于(inti=0;i来看,它看起来像一个bug。我已经记录了Jira问题来跟踪它
public class SampleReader extends AbstractItemReader {
@Inject
@BatchProperty
private String sample;
Iterator<Integer> iter;
@Override
public void open(Serializable checkpoint) throws Exception {
System.out.println("open for reading sample: " + sample);
ArrayList list = new ArrayList<Integer>();
for(int i=0; i<Integer.parseInt(sample); i++) {
list.add(new Integer(i));
}
iter = list.iterator();
}
@Override
public Integer readItem() throws Exception {
if(iter.hasNext())
return iter.next();
else
return null;
}
}
public class SampleWriter extends AbstractItemWriter {
@Inject
@BatchProperty
private String sample;
@Override
public void writeItems(List<Object> items) throws Exception {
System.out.println("writeItems sample: " + sample);
if(sample.equals("1")) {
throw new Exception("FAIL PARTITION 1");
}
if(sample.equals("2")) {
throw new Exception("FAIL PARTITION 2");
}
for (Object itemObj : items) {
Integer item = (Integer) itemObj;
System.out.println(item);
}
}
}
package com.springapp.batch;
import java.util.Properties;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
import javax.batch.operations.JobOperator;
import javax.batch.runtime.BatchRuntime;
import javax.batch.runtime.JobExecution;
import javax.inject.Inject;
import junit.framework.Assert;
import org.junit.Test;
//@RunWith(SpringJUnit4ClassRunner.class)
//@ContextConfiguration("classpath:spring-config.xml")
public class AppTests {
@Test
public void testJob() throws Exception {
JobOperator jobOperator = BatchRuntime.getJobOperator();
long jobExecution = jobOperator.start("sampleBatch", new Properties());
int attempt = 0;
while (true) {
JobExecution execution = jobOperator.getJobExecution(jobExecution);
if (execution.getEndTime() != null) {
//check status
if( "FAILED".equals(execution.getExitStatus()) && attempt < 3 ) {
attempt++;
System.out.println("Batch failed, trying to restart (attempt " + attempt + ")..");
jobExecution = jobOperator.restart(jobExecution, new Properties());
continue;
}
System.out.println("Batch ended with status: " + execution.getExitStatus());
break;
}
}
Assert.assertEquals("COMPLETED", jobOperator.getJobExecution(jobExecution).getExitStatus());
}
}