Question

我试图在MuleRequester的帮助下移动文件。对于大文件（300MB＆gt; x），有时while流阻塞，我总是收到以下错误消息。

文件一直被java.exe进程锁定。

使用小文件没有问题。

该文件保留在文件夹＆＃34; C：\ itm \ main \ datafeeds \ backup＆＃34;和＆＃34; C：\ itm \ main \ datafeeds \ process \＆＃34;是空的。

我不知道如何解决这个问题。

错误消息：

＆＃13;

Message               : Failed to move file "C:\itm\main\datafeeds\backup\my_file.xml" to "C:\itm\main\datafeeds\process\my_file.xml".  The file might already exist.
Payload               : [{numOfRecords=0}]
Payload Type          : java.util.LinkedList
Endpoint              : DefaultInboundEndpoint{endpointUri=file:///C:/itm/main/datafeeds/backup/?autoDelete=true, connector=FileConnector
                        {
                          name=File
                          lifecycle=start
                          this=300a38e7
                          numberOfConcurrentTransactedReceivers=4
                          createMultipleTransactedReceivers=true
                          connected=true
                          supportedProtocols=[file]
                          serviceOverrides=<none>
                        }
                        ,  name='endpoint..C.itm.main.datafeeds.backup', mep=ONE_WAY, properties={autoDelete=true}, transactionConfig=Transaction{factory=null, action=INDIFFERENT, timeout=0}, deleteUnacceptedMessages=false, initialState=started, responseTimeout=10000, endpointEncoding=UTF-8, disableTransportTransformer=false}
Timeout               : 1000
Element               : /poller_product_parse_aff_file/processors/0/0/1 @ product_2_parse_aff_file_to_db
--------------------------------------------------------------------------------
Root Exception stack trace:
org.mule.api.DefaultMuleException: Failed to move file "C:\itm\main\datafeeds\backup\my_file.xml" to "C:\itm\main\datafeeds\process\my_file.xml".  The file might already exist.
	at org.mule.transport.file.FileMessageRequester.moveOrDelete(FileMessageRequester.java:222)
	at org.mule.transport.file.FileMessageRequester.doRequest(FileMessageRequester.java:188)
	at org.mule.transport.AbstractMessageRequester.request(AbstractMessageRequester.java:94)
	at org.mule.transport.AbstractConnector.request(AbstractConnector.java:2259)
	at org.mule.endpoint.DefaultInboundEndpoint.request(DefaultInboundEndpoint.java:80)
	at org.mule.client.DefaultLocalMuleClient.request(DefaultLocalMuleClient.java:184)
	at org.mule.module.MuleRequesterModule.request(MuleRequesterModule.java:64)
...

＆＃13;

骡子请求者cfg：

＆＃13;

<mulerequester:request resource="${file.RequesterUrl}" timeout="1000" doc:name="Mule Requester" />

＆＃13;

环境：

操作系统：Windows Server 2012R2

JRE：v1.7

骡子请求者：v1.5

Mule Anypoint Studio：Mule Server 3.8.0 CE

Answer 1

使用这样的大文件时，问题主要出现在java的内存中。尝试增加可用（最大）java堆大小。

Answer 2

感谢您的回答！我过去曾遇到过这样的堆问题，我想这不是问题所在，因为堆问题会引发特定的错误信息。

我的vm参数是：

＆＃13;

-Xms2048m
-Xmx4096m
-XX:MaxPermSize=2048m

＆＃13;

Answer 3

我认为您将同一文件再次复制到同一位置。

org.mule.api.DefaultMuleException: Failed to move file "C:\itm\main\datafeeds\backup\my_file.xml" to "C:\itm\main\datafeeds\process\my_file.xml".  The file might already exist.

您可以发布完整的xml配置以进一步提供帮助。

Answer 4

其他替代方法是使用文件出站并将有效负载写回输出文件。对于只是移动文件，可能有许多其他选择，如批处理/ shell脚本等。

Answer 5

感谢您的帮助！

这是整个流程：

＆＃13;

<?xml version="1.0" encoding="UTF-8"?>
<mule xmlns:vm="http://www.mulesoft.org/schema/mule/vm" xmlns:mulerequester="http://www.mulesoft.org/schema/mule/mulerequester" xmlns:db="http://www.mulesoft.org/schema/mule/db" xmlns:metadata="http://www.mulesoft.org/schema/mule/metadata" xmlns:http="http://www.mulesoft.org/schema/mule/http" xmlns:wmq="http://www.mulesoft.org/schema/mule/ee/wmq" xmlns:tracking="http://www.mulesoft.org/schema/mule/ee/tracking" 
	xmlns:file="http://www.mulesoft.org/schema/mule/file" xmlns="http://www.mulesoft.org/schema/mule/core" xmlns:doc="http://www.mulesoft.org/schema/mule/documentation"
	xmlns:spring="http://www.springframework.org/schema/beans" 
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-current.xsd
http://www.mulesoft.org/schema/mule/core http://www.mulesoft.org/schema/mule/core/current/mule.xsd
http://www.mulesoft.org/schema/mule/file http://www.mulesoft.org/schema/mule/file/current/mule-file.xsd
http://www.mulesoft.org/schema/mule/ee/tracking http://www.mulesoft.org/schema/mule/ee/tracking/current/mule-tracking-ee.xsd
http://www.mulesoft.org/schema/mule/http http://www.mulesoft.org/schema/mule/http/current/mule-http.xsd
http://www.mulesoft.org/schema/mule/ee/wmq http://www.mulesoft.org/schema/mule/ee/wmq/current/mule-wmq-ee.xsd
http://www.mulesoft.org/schema/mule/db http://www.mulesoft.org/schema/mule/db/current/mule-db.xsd
http://www.mulesoft.org/schema/mule/mulerequester http://www.mulesoft.org/schema/mule/mulerequester/current/mule-mulerequester.xsd
http://www.mulesoft.org/schema/mule/vm http://www.mulesoft.org/schema/mule/vm/current/mule-vm.xsd">

 <file:connector name="File" autoDelete="true" streaming="false" validateConnections="false" doc:name="File" outputAppend="true" moveToDirectory="${file.workingDir}" />
    <flow name="poller_product_parse_aff_file" processingStrategy="synchronous">
        <poll doc:name="Poll">
            <fixed-frequency-scheduler frequency="15" timeUnit="SECONDS"/>
            <db:select config-ref="MYSQL_GENERIC_CFG" doc:name="Database">
                <db:parameterized-query><![CDATA[SELECT COUNT(*) AS numOfRecords FROM mule_product]]></db:parameterized-query>
            </db:select>
        </poll>
        <choice doc:name="Choice">
            <when expression="#[payload.get(0).numOfRecords &lt; 1000]">
                <logger message="#[System.getProperty('line.separator')] ############################ Database is free, so start parsing next xml file ###########################:: #[flowVars.fileRequesterUrl]" level="TRACE" doc:name="Logger"/>
                <mulerequester:request resource="${file.RequesterUrl}" timeout="30000" doc:name="Mule Requester"/>
            
                <choice doc:name="Choice">
                    <when expression="#[payload != null &amp;&amp; payload.size()&gt;0]">
                        <logger message="#[System.getProperty('line.separator')] +++ DB is free and file was found" level="TRACE" doc:name="Logger"/>
                        <flow-ref name="product_parse_aff_file_to_dbFlow" doc:name="product_parse_aff_file_to_dbFlow"/>
                    </when>
                    <otherwise>
                        <logger message="#[System.getProperty('line.separator')]  --- File not found or filesize is zero: #[payload]" level="TRACE" doc:name="Logger"/>
                    </otherwise>
                </choice>
            </when>
            <when expression="">
                <logger message="::::::::::::::: start of parsing the files:no fo records in db :::::&gt;#[payload.get(0).numOfRecords]" level="TRACE" doc:name="Logger"/>
            </when>
            <otherwise>
                <logger message="::::::::::file processing not started as the condition is not met i.e SELECT COUNT(*) AS numOfRecords FROM mule_product &gt;1000" level="TRACE" doc:name="Logger"/>
            </otherwise>
        </choice>
    </flow>
	....
</mule>

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骡子请求者 - 无法移动文件

5 个答案: