[GitHub] GJL commented on a change in pull request #6907: [FLINK-10357][tests] Improve StreamingFileSink E2E test stability.

[GitBox <gi...@apache.org>]

GJL commented on a change in pull request #6907: [FLINK-10357][tests] Improve StreamingFileSink E2E test stability.
URL: https://github.com/apache/flink/pull/6907#discussion_r228225734
 
 

 ##########
 File path: flink-end-to-end-tests/test-scripts/test_streaming_file_sink.sh
 ##########
 @@ -45,47 +40,55 @@ function wait_for_restart {
 }
 
 ###################################
-# Wait a specific number of successful checkpoints
-# to have happened
+# Get all lines in part files and sort them numerically.
 #
 # Globals:
-#   None
+#   OUTPUT_PATH
 # Arguments:
-#   $1: the job id
-#   $2: the number of expected successful checkpoints
-#   $3: timeout in seconds
+#   None
 # Returns:
 #   None
 ###################################
-function wait_for_number_of_checkpoints {
-    local job_id=$1
-    local expected_num_checkpoints=$2
-    local timeout=$3
-    local count=0
-
-    echo "Starting to wait for completion of ${expected_num_checkpoints} checkpoints"
-    while (($(get_completed_number_of_checkpoints ${job_id}) < ${expected_num_checkpoints})); do
+function get_complete_result {
+    find "${OUTPUT_PATH}" -type f \( -iname "part-*" \) -exec cat {} + | sort -g
+}
 
-        if [[ ${count} -gt ${timeout} ]]; then
-            echo "A timeout occurred waiting for successful checkpoints"
+###################################
+# Waits until a number of values have been written within a timeout.
+# If the timeout expires, exit with return code 1.
+#
+# Globals:
+#   None
+# Arguments:
+#   $1: the number of expected values
+#   $2: timeout in seconds
+# Returns:
+#   None
+###################################
+function wait_for_complete_result {
+    local expected_number_of_values=$1
+    local polling_timeout=$2
+    local polling_interval=1
+    local seconds_elapsed=0
+
+    local number_of_values=$(get_complete_result | tail -1)
 
 Review comment:
   Good catch. I have forgotten about it. `$(get_complete_result | tail -1)` is even wrong because we start at `0`.

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