Question

Team,

I am doing a technical poc for reading records from a flat file and inserting the data to database.

I am using chunk task and running this job using spring batch admin successfully.

I have to implement the retry policy along with a feature to set the time interval between each retry. I am stuck up with setting the time interval between each retry as chuck doesn’t support it directly. Is there any work around for this?

My code is

<batch:job id="importDataJob" job-repository="jobRepository">
  <batch:step id="importDataStep">
    <batch:tasklet transaction-manager="transactionManager">
      <batch:chunk reader="dataReader" writer="dataWriter"  commit-interval="1" retry-limit="3">
        <batch:retryable-exception-classes>
          <batch:include class="javax.naming.ServiceUnavailableException" />
        </batch:retryable-exception-classes>
      </batch:chunk>
    </batch:tasklet>
  </batch:step>
</batch:job>

Answer 1

In your case the configuration will look like:

Spring Batch 2.x

<bean id="stepParent" class="org.springframework.batch.core.step.item.FaultTolerantStepFactoryBean" abstract="true">
  <property name="backOffPolicy">
    <bean class="org.springframework.batch.retry.backoff.FixedBackOffPolicy"
      <property name="backOffPeriod" value="2000" />
    </bean>
  </property>
</bean>

<batch:job id="importDataJob" job-repository="jobRepository">
  <batch:step id="importDataStep" parent="stepParent">
     ...
  </batch:step>
</batch:job>

Unfortunately, batch namespace does not support setting backOffPolicy directly to step, see BATCH-1441.

Spring Batch 3.0

In Spring Batch 3.0 some classes have moved to other packages. This is the the configuration fragment:

<bean id="stepParent"
  class="org.springframework.batch.core.step.factory.FaultTolerantStepFactoryBean"         
  abstract="true">

  <property name="backOffPolicy">
    <bean class="org.springframework.retry.backoff.FixedBackOffPolicy">
      <property name="backOffPeriod" value="2000"/>
    </bean>
  </property>

</bean>