mxm opened a new pull request #10238: [FLINK-8949] Allow configuration of maximum Rest HTTP header length URL: https://github.com/apache/flink/pull/10238 The maximum header length is currently 8192. The maximum line length of each header field is 4092. This makes the header length configurable and raises the line length limit to match the maximum header length. Without this, watermarks for jobs with a parallelism of >= 160 cannot be displayed correctly and will result in a "/bad-request" error message. Test request string which exceeds the 4092 line length: ``` http://localhost:8081/jobs/32f2205231d280ad105b011198dd9e5f/vertices/8b69eb2c39b9caf941896fdafa7ca05f/metrics?get=0.currentInputWatermark,1.currentInputWatermark,2.currentInputWatermark,3.currentInputWatermark,4.currentInputWatermark,5.currentInputWatermark,6.currentInputWatermark,7.currentInputWatermark,8.currentInputWatermark,9.currentInputWatermark,10.currentInputWatermark,11.currentInputWatermark,12.currentInputWatermark,13.currentInputWatermark,14.currentInputWatermark,15.currentInputWatermark,16.currentInputWatermark,17.currentInputWatermark,18.currentInputWatermark,19.currentInputWatermark,20.currentInputWatermark,21.currentInputWatermark,22.currentInputWatermark,23.currentInputWatermark,24.currentInputWatermark,25.currentInputWatermark,26.currentInputWatermark,27.currentInputWatermark,28.currentInputWatermark,29.currentInputWatermark,30.currentInputWatermark,31.currentInputWatermark,32.currentInputWatermark,33.currentInputWatermark,34.currentInputWatermark,35.currentInputWatermark,36.currentInputWatermark,37.currentInputWatermark,38.currentInputWatermark,39.currentInputWatermark,40.currentInputWatermark,41.currentInputWatermark,42.currentInputWatermark,43.currentInputWatermark,44.currentInputWatermark,45.currentInputWatermark,46.currentInputWatermark,47.currentInputWatermark,48.currentInputWatermark,49.currentInputWatermark,50.currentInputWatermark,51.currentInputWatermark,52.currentInputWatermark,53.currentInputWatermark,54.currentInputWatermark,55.currentInputWatermark,56.currentInputWatermark,57.currentInputWatermark,58.currentInputWatermark,59.currentInputWatermark,60.currentInputWatermark,61.currentInputWatermark,62.currentInputWatermark,63.currentInputWatermark,64.currentInputWatermark,65.currentInputWatermark,66.currentInputWatermark,67.currentInputWatermark,68.currentInputWatermark,69.currentInputWatermark,70.currentInputWatermark,71.currentInputWatermark,72.currentInputWatermark,73.currentInputWatermark,74.currentInputWatermark,75.currentInputWatermark,76.currentInputWatermark,77.currentInputWatermark,78.currentInputWatermark,79.currentInputWatermark,80.currentInputWatermark,81.currentInputWatermark,82.currentInputWatermark,83.currentInputWatermark,84.currentInputWatermark,85.currentInputWatermark,86.currentInputWatermark,87.currentInputWatermark,88.currentInputWatermark,89.currentInputWatermark,90.currentInputWatermark,91.currentInputWatermark,92.currentInputWatermark,93.currentInputWatermark,94.currentInputWatermark,95.currentInputWatermark,96.currentInputWatermark,97.currentInputWatermark,98.currentInputWatermark,99.currentInputWatermark,100.currentInputWatermark,101.currentInputWatermark,102.currentInputWatermark,103.currentInputWatermark,104.currentInputWatermark,105.currentInputWatermark,106.currentInputWatermark,107.currentInputWatermark,108.currentInputWatermark,109.currentInputWatermark,110.currentInputWatermark,111.currentInputWatermark,112.currentInputWatermark,113.currentInputWatermark,114.currentInputWatermark,115.currentInputWatermark,116.currentInputWatermark,117.currentInputWatermark,118.currentInputWatermark,119.currentInputWatermark,120.currentInputWatermark,121.currentInputWatermark,122.currentInputWatermark,123.currentInputWatermark,124.currentInputWatermark,125.currentInputWatermark,126.currentInputWatermark,127.currentInputWatermark,128.currentInputWatermark,129.currentInputWatermark,130.currentInputWatermark,131.currentInputWatermark,132.currentInputWatermark,133.currentInputWatermark,134.currentInputWatermark,135.currentInputWatermark,136.currentInputWatermark,137.currentInputWatermark,138.currentInputWatermark,139.currentInputWatermark,140.currentInputWatermark,141.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark,142.currentInputWatermark ```
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