异常发现更新的轮询水印：变量不可序列化
Exception found updated poll watermark: Variable is not serializable
我在 Mule Poll/Watermark 中遇到以下异常：
Exception found updating watermark java.lang.IllegalArgumentException:
Value retrieved from event for variable carimboTempo is not
serializable and hence cant be saved to the object store
部分XML配置：
<db:mysql-config name="MySQL_Configuration" host="${crm.db.host}" port="${crm.db.port}" user="${crm.db.user}" password="${crm.db.password}" database="${crm.db.instance}" doc:name="MySQL Configuration"/>
<flow name="levius-contatoFlow" processingStrategy="synchronous">
<poll doc:name="Poll">
<fixed-frequency-scheduler frequency="10000"/>
<watermark variable="carimboTempo" default-expression="2016-03-24 00:00:00" update-expression="#[flowVars.date_modified]"/>
<db:select config-ref="MySQL_Configuration" doc:name="Database">
<db:parameterized-query><![CDATA[select
ac.id,
c.first_name,
c.last_name,
greatest(ac.date_modified, c.date_modified) date_modified
from accounts_contacts ac
join contacts c on c.id = ac.contact_id
where greatest(ac.date_modified, c.date_modified) > #[carimboTempo]
order by greatest(ac.date_modified, c.date_modified)]]></db:parameterized-query>
</db:select>
</poll>
<foreach doc:name="For Each">
<set-variable variableName="date_modified" value="#[payload.date_modified]" doc:name="Variable"/>
</foreach>
</flow>
为什么会出现这个异常？我做错了什么吗？
我有同样的错误。你能试试这个吗:
[sessionVars.lastUpdated == null?lastModified:sessionVars.lastUpdated]
我认为，流程正在尝试序列化空值。
我在 Mule Poll/Watermark 中遇到以下异常：
Exception found updating watermark java.lang.IllegalArgumentException: Value retrieved from event for variable carimboTempo is not serializable and hence cant be saved to the object store
部分XML配置：
<db:mysql-config name="MySQL_Configuration" host="${crm.db.host}" port="${crm.db.port}" user="${crm.db.user}" password="${crm.db.password}" database="${crm.db.instance}" doc:name="MySQL Configuration"/>
<flow name="levius-contatoFlow" processingStrategy="synchronous">
<poll doc:name="Poll">
<fixed-frequency-scheduler frequency="10000"/>
<watermark variable="carimboTempo" default-expression="2016-03-24 00:00:00" update-expression="#[flowVars.date_modified]"/>
<db:select config-ref="MySQL_Configuration" doc:name="Database">
<db:parameterized-query><![CDATA[select
ac.id,
c.first_name,
c.last_name,
greatest(ac.date_modified, c.date_modified) date_modified
from accounts_contacts ac
join contacts c on c.id = ac.contact_id
where greatest(ac.date_modified, c.date_modified) > #[carimboTempo]
order by greatest(ac.date_modified, c.date_modified)]]></db:parameterized-query>
</db:select>
</poll>
<foreach doc:name="For Each">
<set-variable variableName="date_modified" value="#[payload.date_modified]" doc:name="Variable"/>
</foreach>
</flow>
为什么会出现这个异常？我做错了什么吗？
我有同样的错误。你能试试这个吗:
[sessionVars.lastUpdated == null?lastModified:sessionVars.lastUpdated]
我认为，流程正在尝试序列化空值。