I have a simple program working with Spring Batch Input reader, Writer. The purpose of the program is to simple read a csv file.

I have set the commit-interval to 5. The csv file had only 5 records but for some reason the Writer was called 3 times although the commit-interval was set to 5. I was expecting that the writer would be called only once based on my understanding that the item reader and processor would read each item line by line and then the writer would process all 5 at once. I guess I am not clear about the impact of commit-interval. Any advise?

Spring Batch commit-interval configuration not working

<html>
    <head>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<script src="https://cdn.jsdelivr.net/npm/chart.js@2.9.4/dist/Chart.min.js"></script>
    </head>
    <body>
        <canvas id="myChart" width="400" height="200"></canvas>

        <script>
            const xlabel=[];
            const ytemp=[];
            chartIt();
            
            async function chartIt(){
               await getDatach();
           
            const ctx = document.getElementById('myChart').getContext('2d');
            
            const myChart = new Chart(ctx, {
                type: 'line',
                data: {
                    labels:xlabel,
                    datasets: [{
                        label: 'some data',
                        data: ytemp,
                        fill:false,
                        backgroundColor: 'rgba(255, 99, 132, 0.2)' ,
                        borderColor: 'rgba(255, 99, 132, 1)',
                        borderWidth: 1
                    }]
                }
            });

        }
          
     async function getDatach(){

     const response = await fetch('ZonAnn.Ts+dSST.csv');
     const data=await response.text();
 
     const table=data.split('\n').slice(1);
     table.forEach(row => {
        const columns=row.split(',');
        const year=columns[0];
        xlabel.push(year);
        const temp=columns[1];
        ytemp.push( parseFloat (temp)+14);
        
    });
    
 }
            </script>
       
    </body>
</html>

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