Bean method on rowEdit event of p:dataTable is not invoked

I am trying edit row from <p:dataTable> n call bean method but the problem is bean method is not invoked on rowEdit event. It will be appreciable, if someone could give me the solution.

Also, my bean is already in View Scope, even not working in session scope... I have tried for all three scopes.

My codes are given below :

<h:form id="commentList">
    <p:dataTable id="commentTable" editable="true" paginator="true" rows="10" var="comment" value="#{commentAction.list(uID)}" class="table table-striped table-bordered table-hover commentTable" widgetVar="commentListTable">
        <p:ajax event="rowEdit" listener="#{commentAction.updateCommentStatus}"/>
        <p:column filterBy="#{comment.commentId}" footerText="" headerText="Comment Id" filterMatchMode="contains" sortBy="#{comment.commentId}">
            <h:outputText value="#{comment.commentId}" id="commentId"/>
        </p:column>
        <p:column filterBy="#{comment.selectedText}" headerText="Selected Text" sortBy="#{comment.selectedText}">
            <h:outputText value="#{comment.selectedText}" id="selectedText"/>
        </p:column>
        <p:column filterBy="#{comment.commentText}" headerText="Comment" sortBy="#{comment.commentText}">
            <h:outputText value="#{comment.commentText}" id="commentText" escape="false"/>
        </p:column>
        <p:column filterBy="" headerText="Comment From" sortBy="">
            <h:outputText value="" id="commentFrom"/>
        </p:column>
        <p:column filterBy="#{comment.insertedOn}" headerText="Date/Time" sortBy="#{comment.insertedOn}">
            <h:outputText value="#{comment.insertedOn}" id="insertedOn"/>
        </p:column>
        <p:column filterBy="#{comment.commentStatus}" headerText="Comment Status" sortBy="#{comment.commentStatus}">
            <p:cellEditor>
                <f:facet name="output">
                    <h:outputText value="#{comment.commentStatus}" id="commSatus"/>
                </f:facet>
                <f:facet name="input">
                    <h:selectOneMenu value="#{commentAciton.commentStatus}" id="commentStatus" class="commentSelectBox">
                        <f:selectItem itemLabel="UpdateStatus" itemDisabled="true"/>
                        <f:selectItem itemValue="Open" itemLabel="Open"/>
                        <f:selectItem itemValue="Close" itemLabel="Close"/>
                        <f:selectItem itemValue="Cancel" itemLabel="Cancel"/>
                    </h:selectOneMenu>
                </f:facet>
            </p:cellEditor>
        </p:column>
        <p:column style="width:32px">
            <p:rowEditor />
        </p:column>
    </p:dataTable>
</h:form>

And bean method is:

public void updateCommentStatus(RowEditEvent event) {
    try {
        logger.info("comment Iddddddddddd: " + commentId);
        logger.info("comment Statusssssss: " + this.commentStatus);
        Comment comment = (Comment) event.getObject();
        logger.info("new value: " + comment.getCommentStatus());
    } catch (Exception ex) {
        logger.info("Exception caught in updateCommentStatus in CommentAction ..." + ex.getMessage());
        ex.printStackTrace();
    }
}

Thanx to @tiny problem is resolved by replacing list retrieving code from getter method to init() in postConstruct annotation. Below is the corrected code

<p:dataTable id="commentTable" editable="true" paginator="true" rows="10" var="comment" value="#{commentAction.commentList}" class="table table-striped table-bordered table-hover commentTable" widgetVar="commentListTable">
<p:ajax event="rowEdit" listener="#{commentAction.updateCommentStatus}"/>
  ....
  ....
  ....
</p:dataTable>

@PostConstruct
    public void init(){
        logger.info("urs: "+ursId);
        CommentManager commentManager = new CommentManager();
        try {
            commentList = commentManager.list(1); //hardcoding ryt now
        } catch (Exception ex) {
            logger.info("Exception caught in init in CommentAction ..." + ex.getMessage());
            ex.printStackTrace();
        }
    }

    public void updateCommentStatus(RowEditEvent event){
        try{
            CommentManager commentManager = new CommentManager();
            Comment comment = (Comment)event.getObject();
            logger.info("*****************************************************");  
            logger.info("comment Iddddddddddd: " +comment.getCommentId());
            logger.info("comment Statusssssss: " +comment.getCommentStatus());
            commentManager.updateCommentStatus(comment);
        } catch(Exception ex){
            logger.info("Exception caught in updateCommentStatus in CommentAction ..." + ex.getMessage());
            ex.printStackTrace();
        }
    }