[jira] [Comment Edited] (FLINK-15105) Resuming Externalized Checkpoint after terminal failure (rocks, incremental) end-to-end test stalls on travis
[ https://issues.apache.org/jira/browse/FLINK-15105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16994618#comment-16994618 ] Chesnay Schepler edited comment on FLINK-15105 at 12/12/19 12:47 PM: - Since this tests results in error behavior, wouldn't the simplest solution be to disable the exception check for runs where failures are being simulated? This would only affect the {{after terminal failure}} variant of the {{Resuming Externalized Checkpoint}} tests. The correctness of the execution is verified by the test itself; checking that only very specific exceptions are being thrown in case of an error seems a bit strict and a contract we realistically can't enforce. was (Author: zentol): Since this tests results in error behavior, wouldn't the simplest solution be to disable the exception check for runs where failures are being simulated? This would only affect the {{after terminal failure}} variant of the tests. The correctness of the execution is verified by the test itself; also checking that only very specific exceptions are being thrown in case of an error seems a bit strict and a contract we realistically can't enforce. > Resuming Externalized Checkpoint after terminal failure (rocks, incremental) > end-to-end test stalls on travis > - > > Key: FLINK-15105 > URL: https://issues.apache.org/jira/browse/FLINK-15105 > Project: Flink > Issue Type: Bug > Components: Runtime / Checkpointing >Affects Versions: 1.10.0 >Reporter: Yu Li >Priority: Critical > Labels: test-stability > Fix For: 1.10.0 > > > Resuming Externalized Checkpoint after terminal failure (rocks, incremental) > end-to-end test fails on release-1.9 nightly build stalls with "The job > exceeded the maximum log length, and has been terminated". > https://api.travis-ci.org/v3/job/621090394/log.txt -- This message was sent by Atlassian Jira (v8.3.4#803005)
[jira] [Comment Edited] (FLINK-15105) Resuming Externalized Checkpoint after terminal failure (rocks, incremental) end-to-end test stalls on travis
[ https://issues.apache.org/jira/browse/FLINK-15105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16993554#comment-16993554 ] Congxian Qiu(klion26) edited comment on FLINK-15105 at 12/11/19 1:52 PM: - First, answer the last question: we can't just remove "error" message in {{RuntimeException}}, we'll fail in {{common.sh#}}{{check_logs_for_exceptions()}} because of the {{RuntimeException}}. Then I'll try to describe more about the things about {{FailureMapper}}. # {{FailureMapper is only used in {{DataStreamAllroundTestProgram. # we'll add a {{FailureMapper}} in {{DataStreamAllroundTestProgram only if we [enabled TEST_SIMULATE_FAILURE|https://github.com/apache/flink/blob/eddad99123525211c900102206384dacaf8385fc/flink-end-to-end-tests/flink-datastream-allround-test/src/main/java/org/apache/flink/streaming/tests/DataStreamAllroundTestProgram.java#L173]}} in {{DataStreamAllroundTestProgram}} # {{We'll throw Exception in {{FailureMapper#map and {{FailureMapper#notifyCheckpointComplete}} # {{we'll enable {{TEST_SIMULATE_FAILURE}} }} in {{test_ha_datastream.sh}}, {{test_ha_per_job_cluster_datastream.sh}} and {{test_resume_externalized_checkpoints.sh}} IIUC, all the above tests are wanna test whether the job can restore from(restore with checkpoint) the last failed job successfully(but we do not care where the exception come from, then Exception thrown from FailureMapper#mapper or FailureMapper#notifyCheckpointComplete have the same effect). If we want to verify that `failure of notifyCheckpointComplete can fail task`, maybe we can add a ut for it. was (Author: klion26): First, answer the last question: we can't just remove "error" message in {{RuntimeException}}, we'll fail in {{common.sh#}}{{check_logs_for_exceptions()}} because of the {{RuntimeException}}. Then I'll try to describe more about the things about {{FailureMapper}}. # {{FailureMapper is only used in {{DataStreamAllroundTestProgram. # we'll add a {{FailureMapper}} in {{DataStreamAllroundTestProgram only if we [enabled TEST_SIMULATE_FAILURE|https://github.com/apache/flink/blob/eddad99123525211c900102206384dacaf8385fc/flink-end-to-end-tests/flink-datastream-allround-test/src/main/java/org/apache/flink/streaming/tests/DataStreamAllroundTestProgram.java#L173]}} in {{DataStreamAllroundTestProgram}} # {{We'll throw Exception in {{FailureMapper#map and {{FailureMapper#notifyCheckpointComplete}} # {{we'll enable {{TEST_SIMULATE_FAILURE}} }} in {{test_ha_datastream.sh}}, {{test_ha_per_job_cluster_datastream.sh}} and {{test_resume_externalized_checkpoints.sh}} IIUC, all the above tests are wanna test whether the job can restore from(restore with checkpoint) the last failed job successfully(but we do not care where the exception come from, then Exception thrown from FailureMapper#mapper or FailureMapper#notifyCheckpointComplete have the same effect, please correct me if I miss anything here). If we want to verify that `failure of notifyCheckpointComplete can fail task`, maybe we can add a ut for it. > Resuming Externalized Checkpoint after terminal failure (rocks, incremental) > end-to-end test stalls on travis > - > > Key: FLINK-15105 > URL: https://issues.apache.org/jira/browse/FLINK-15105 > Project: Flink > Issue Type: Bug > Components: Runtime / Checkpointing >Affects Versions: 1.10.0 >Reporter: Yu Li >Priority: Critical > Labels: test-stability > Fix For: 1.10.0 > > > Resuming Externalized Checkpoint after terminal failure (rocks, incremental) > end-to-end test fails on release-1.9 nightly build stalls with "The job > exceeded the maximum log length, and has been terminated". > https://api.travis-ci.org/v3/job/621090394/log.txt -- This message was sent by Atlassian Jira (v8.3.4#803005)
[jira] [Comment Edited] (FLINK-15105) Resuming Externalized Checkpoint after terminal failure (rocks, incremental) end-to-end test stalls on travis
[ https://issues.apache.org/jira/browse/FLINK-15105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16993554#comment-16993554 ] Congxian Qiu(klion26) edited comment on FLINK-15105 at 12/11/19 1:46 PM: - First, answer the last question: we can't just remove "error" message in {{RuntimeException}}, we'll fail in {{common.sh#}}{{check_logs_for_exceptions()}} because of the {{RuntimeException}}. Then I'll try to describe more about the things about {{FailureMapper}}. # {{FailureMapper is only used in {{DataStreamAllroundTestProgram. # we'll add a {{FailureMapper}} in {{DataStreamAllroundTestProgram only if we [enabled TEST_SIMULATE_FAILURE|https://github.com/apache/flink/blob/eddad99123525211c900102206384dacaf8385fc/flink-end-to-end-tests/flink-datastream-allround-test/src/main/java/org/apache/flink/streaming/tests/DataStreamAllroundTestProgram.java#L173]}} in {{DataStreamAllroundTestProgram}} # {{We'll throw Exception in {{FailureMapper#map and {{FailureMapper#notifyCheckpointComplete}} # {{we'll enable {{TEST_SIMULATE_FAILURE}} }} in {{test_ha_datastream.sh}}, {{test_ha_per_job_cluster_datastream.sh}} and {{test_resume_externalized_checkpoints.sh}} IIUC, all the above tests are wanna test whether the job can restore from(restore with checkpoint) the last failed job successfully(but we do not care where the exception come from, then Exception thrown from FailureMapper#mapper or FailureMapper#notifyCheckpointComplete have the same effect, please correct me if I miss anything here). If we want to verify that `failure of notifyCheckpointComplete can fail task`, maybe we can add a ut for it. was (Author: klion26): First, answer the last question: we can't just remove "error" message in {{RuntimeException}}, we'll fail in {{common.sh#}}{{check_logs_for_exceptions()}} because of the {{RuntimeException}}. Then I'll try to describe more about the things about {{FailureMapper}}. # {{FailureMapper is only used in {{DataStreamAllroundTestProgram. # we'll add a {{FailureMapper}} in {{DataStreamAllroundTestProgram only }}if we [enabled TEST_SIMULATE_FAILURE|https://github.com/apache/flink/blob/eddad99123525211c900102206384dacaf8385fc/flink-end-to-end-tests/flink-datastream-allround-test/src/main/java/org/apache/flink/streaming/tests/DataStreamAllroundTestProgram.java#L173]{{}} in {{DataStreamAllroundTestProgram}} # {{We'll throw Exception in }}{{FailureMapper#map}} and {{FailureMapper#notifyCheckpointComplete}} # {{we'll enable }}{{TEST_SIMULATE_FAILURE}} in {{test_ha_datastream.sh}}, {{test_ha_per_job_cluster_datastream.sh}} and {{test_resume_externalized_checkpoints.sh}} IIUC, all the above tests are wanna test whether the job can restore from(restore with checkpoint) the last failed job successfully(but we do not care where the exception come from, then Exception thrown from FailureMapper#mapper or FailureMapper#notifyCheckpointComplete have the same effect, please correct me if I miss anything here). If we want to verify that `failure of notifyCheckpointComplete can fail task`, maybe we can add a ut for it. > Resuming Externalized Checkpoint after terminal failure (rocks, incremental) > end-to-end test stalls on travis > - > > Key: FLINK-15105 > URL: https://issues.apache.org/jira/browse/FLINK-15105 > Project: Flink > Issue Type: Bug > Components: Runtime / Checkpointing >Affects Versions: 1.10.0 >Reporter: Yu Li >Priority: Critical > Labels: test-stability > Fix For: 1.10.0 > > > Resuming Externalized Checkpoint after terminal failure (rocks, incremental) > end-to-end test fails on release-1.9 nightly build stalls with "The job > exceeded the maximum log length, and has been terminated". > https://api.travis-ci.org/v3/job/621090394/log.txt -- This message was sent by Atlassian Jira (v8.3.4#803005)
[jira] [Comment Edited] (FLINK-15105) Resuming Externalized Checkpoint after terminal failure (rocks, incremental) end-to-end test stalls on travis
[ https://issues.apache.org/jira/browse/FLINK-15105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16992673#comment-16992673 ] Congxian Qiu(klion26) edited comment on FLINK-15105 at 12/10/19 4:09 PM: - [~trohrmann] In the previous comment, I didn't want to remove the whole {{FailureMapper}}, but just want to remove the {{Artificial failure}} throwing statement in {{FailureMapper}}#{{notifyCheckpointComplete just as the comment in the below code block.}} {code:java} public T map(T value) throws Exception { numProcessedRecords++; if (isReachedFailureThreshold()) { throw new Exception("Artificial failure."); } return value; } @Override public void notifyCheckpointComplete(long checkpointId) throws Exception { numCompleteCheckpoints++; if (isReachedFailureThreshold()) { // === just want to remove this === throw new Exception("Artificial failure."); } } {code} I think the problem here is that we throw Artifical failure when completing checkpoint After throwing {{Artificial failure}} in {{FailureMapper#notifyCheckpointComplete}} ---> we got the following exception(attached below) ---> test failed when {{check_logs_for_errors}} using the commands in {{common.sh}}. {code:java} java.lang.RuntimeException: Error while confirming checkpoint at org.apache.flink.runtime.taskmanager.Task$2.run(Task.java:1205) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.Exception: Artificial failure. at org.apache.flink.streaming.tests.FailureMapper.notifyCheckpointComplete(FailureMapper.java:70) at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.notifyCheckpointComplete(AbstractUdfStreamOperator.java:130) at org.apache.flink.streaming.runtime.tasks.StreamTask.notifyCheckpointComplete(StreamTask.java:822) at org.apache.flink.runtime.taskmanager.Task$2.run(Task.java:1200) ... 5 more {code} Remove the {{Artificial failure throwing}} in {{FailureMapper#notifyCheckpointComplete, we can still throw }}{{Aritifical failure}} in {{FailureMapper#notifyCheckpointComplete}}, IMHO, the {{Artificial failure throwing}} is just needed when the source is finite, but in the test job, we use [SequenceGeneratorSource|https://github.com/apache/flink/blob/171020749f7fccfa7781563569e2c88ea5e8b6a1/flink-end-to-end-tests/flink-datastream-allround-test/src/main/java/org/apache/flink/streaming/tests/SequenceGeneratorSource.java#L102], it is an infinite source. was (Author: klion26): [~trohrmann] In the previous comment, I'm not want to remove the whole {{FailureMapper}}, but just want to remove the {{Artificial failure}} throwing statement in {{FailureMapper}}#{{notifyCheckpointComplete just as the comment in the below code block.}} {code:java} public T map(T value) throws Exception { numProcessedRecords++; if (isReachedFailureThreshold()) { throw new Exception("Artificial failure."); } return value; } @Override public void notifyCheckpointComplete(long checkpointId) throws Exception { numCompleteCheckpoints++; if (isReachedFailureThreshold()) { // === just want to remove this === throw new Exception("Artificial failure."); } } {code} I think the problem here is that we throw Artifical failure when completing checkpoint After throwing {{Artificial failure}} in {{FailureMapper#notifyCheckpointComplete}} ---> we got the following exception(attached below) ---> test failed when {{check_logs_for_errors}} using the commands in {{common.sh}}. {code:java} java.lang.RuntimeException: Error while confirming checkpoint at org.apache.flink.runtime.taskmanager.Task$2.run(Task.java:1205) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.Exception: Artificial failure. at org.apache.flink.streaming.tests.FailureMapper.notifyCheckpointComplete(FailureMapper.java:70) at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.notifyCheckpointComplete(AbstractUdfStreamOperator.java:130) at org.apache.flink.streaming.runtime.tasks.StreamTask.notifyCheckpointComplete(StreamTask.java:822) at org.
[jira] [Comment Edited] (FLINK-15105) Resuming Externalized Checkpoint after terminal failure (rocks, incremental) end-to-end test stalls on travis
[ https://issues.apache.org/jira/browse/FLINK-15105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16992673#comment-16992673 ] Congxian Qiu(klion26) edited comment on FLINK-15105 at 12/10/19 3:49 PM: - [~trohrmann] In the previous comment, I'm not want to remove the whole {{FailureMapper}}, but just want to remove the {{Artificial failure}} throwing statement in {{FailureMapper}}#{{notifyCheckpointComplete just as the comment in the below code block.}} {code:java} public T map(T value) throws Exception { numProcessedRecords++; if (isReachedFailureThreshold()) { throw new Exception("Artificial failure."); } return value; } @Override public void notifyCheckpointComplete(long checkpointId) throws Exception { numCompleteCheckpoints++; if (isReachedFailureThreshold()) { // === just want to remove this === throw new Exception("Artificial failure."); } } {code} I think the problem here is that we throw Artifical failure when completing checkpoint After throwing {{Artificial failure}} in {{FailureMapper#notifyCheckpointComplete}} ---> we got the following exception(attached below) ---> test failed when {{check_logs_for_errors}} using the commands in {{common.sh}}. {code:java} java.lang.RuntimeException: Error while confirming checkpoint at org.apache.flink.runtime.taskmanager.Task$2.run(Task.java:1205) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.Exception: Artificial failure. at org.apache.flink.streaming.tests.FailureMapper.notifyCheckpointComplete(FailureMapper.java:70) at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.notifyCheckpointComplete(AbstractUdfStreamOperator.java:130) at org.apache.flink.streaming.runtime.tasks.StreamTask.notifyCheckpointComplete(StreamTask.java:822) at org.apache.flink.runtime.taskmanager.Task$2.run(Task.java:1200) ... 5 more {code} Remove the {{Artificial failure throwing}} in {{FailureMapper#notifyCheckpointComplete, we can still throw }}{{Aritifical failure}} in {{FailureMapper#notifyCheckpointComplete}}, IMHO, the {{Artificial failure throwing}} is just needed when the source is finite, but in the test job, we use [SequenceGeneratorSource|https://github.com/apache/flink/blob/171020749f7fccfa7781563569e2c88ea5e8b6a1/flink-end-to-end-tests/flink-datastream-allround-test/src/main/java/org/apache/flink/streaming/tests/SequenceGeneratorSource.java#L102], it is an infinite source. was (Author: klion26): [~trohrmann] In the previous comment, I'm not want to remove the whole {{FailureMapper}}, but just want to remove the {{Artificial failure}} throwing statement in {{FailureMapper}}#{{notifyCheckpointComplete just as the comment in the below code block.}} I think the problem here is that we throw Artifical failure when completing checkpoint(we'll throw Artifical failure in two places in {{FailureMapper}}) {code:java} public T map(T value) throws Exception { numProcessedRecords++; if (isReachedFailureThreshold()) { throw new Exception("Artificial failure."); } return value; } @Override public void notifyCheckpointComplete(long checkpointId) throws Exception { numCompleteCheckpoints++; if (isReachedFailureThreshold()) { // === just want to remove this === throw new Exception("Artificial failure."); } } {code} After throwing {{Artificial failure}} in {{FailureMapper#notifyCheckpointComplete}} ---> we got the following exception(attached below) ---> test failed when {{check_logs_for_errors}} using the commands in {{common.sh}}. {code:java} java.lang.RuntimeException: Error while confirming checkpoint at org.apache.flink.runtime.taskmanager.Task$2.run(Task.java:1205) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.Exception: Artificial failure. at org.apache.flink.streaming.tests.FailureMapper.notifyCheckpointComplete(FailureMapper.java:70) at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.notifyCheckpointComplete(AbstractUdfStreamOperator.java:130) at org.apache.flink.streaming.runtime.tasks.Stream
[jira] [Comment Edited] (FLINK-15105) Resuming Externalized Checkpoint after terminal failure (rocks, incremental) end-to-end test stalls on travis
[ https://issues.apache.org/jira/browse/FLINK-15105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16991179#comment-16991179 ] Congxian Qiu(klion26) edited comment on FLINK-15105 at 12/9/19 6:38 AM: The test complete checkpoint successfully in the first job, and resumed from the checkpoint successfully in the second job, and can complete checkpoint in the seconde job successfully, {code:java} // log for first job 2019-12-05 20:12:17,410 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph - SlidingWindowOperator (1/2) (5a5c73dd041a0145bc02dc017e46bf1f) switched from DE PLOYING to RUNNING. 2019-12-05 20:12:17,970 INFO org.apache.flink.runtime.checkpoint.CheckpointCoordinator - Triggering checkpoint 1 @ 1575576737956 for job 39a292088648857cac5f7e110547c18 0. 2019-12-05 20:12:21,095 INFO org.apache.flink.runtime.checkpoint.CheckpointCoordinator - Completed checkpoint 1 for job 39a292088648857cac5f7e110547c180 (261564 bytes in 3114 ms). 2019-12-05 20:12:21,113 INFO org.apache.flink.runtime.checkpoint.CheckpointCoordinator - Triggering checkpoint 2 @ 1575576741094 for job 39a292088648857cac5f7e110547c180. 2019-12-05 20:12:22,002 INFO org.apache.flink.runtime.executiongraph.ExecutionGraph - FailureMapper (1/1) (4d273da136346ef3ff6e1a54d197f00b) switched from RUNNING to FAILED. java.lang.RuntimeException: Error while confirming checkpoint at org.apache.flink.runtime.taskmanager.Task$2.run(Task.java:1205) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.Exception: Artificial failure. at org.apache.flink.streaming.tests.FailureMapper.notifyCheckpointComplete(FailureMapper.java:70) at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.notifyCheckpointComplete(AbstractUdfStreamOperator.java:130) at org.apache.flink.streaming.runtime.tasks.StreamTask.notifyCheckpointComplete(StreamTask.java:822) at org.apache.flink.runtime.taskmanager.Task$2.run(Task.java:1200) ... 5 more 2019-12-05 20:12:22,014 INFO org.apache.flink.runtime.checkpoint.CheckpointCoordinator - Discarding checkpoint 2 of job 39a292088648857cac5f7e110547c180. java.lang.RuntimeException: Error while confirming checkpoint at org.apache.flink.runtime.taskmanager.Task$2.run(Task.java:1205) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748) Caused by: java.lang.Exception: Artificial failure. at org.apache.flink.streaming.tests.FailureMapper.notifyCheckpointComplete(FailureMapper.java:70) at org.apache.flink.streaming.api.operators.AbstractUdfStreamOperator.notifyCheckpointComplete(AbstractUdfStreamOperator.java:130) at org.apache.flink.streaming.runtime.tasks.StreamTask.notifyCheckpointComplete(StreamTask.java:822) at org.apache.flink.runtime.taskmanager.Task$2.run(Task.java:1200) ... 5 more // log for second job 2019-12-05 20:12:27,190 INFO org.apache.flink.runtime.checkpoint.CheckpointCoordinator - Starting job 7c862506012fb04c0d565bfda7cc9595 from savepoint file:///home/travis/build/apache/flink/flink-end-to-end-tests/test-scripts/temp-test-directory-02075534631/externalized-chckpt-e2e-backend-dir/39a292088648857cac5f7e110547c180/chk-1 () 2019-12-05 20:12:27,213 INFO org.apache.flink.runtime.checkpoint.CheckpointCoordinator - Reset the checkpoint ID of job 7c862506012fb04c0d565bfda7cc9595 to 2. 2019-12-05 20:12:27,220 INFO org.apache.flink.runtime.checkpoint.CheckpointCoordinator - Restoring job 7c862506012fb04c0d565bfda7cc9595 from latest valid checkpoint: Checkpoint 1 @ 0 for 7c862506012fb04c0d565bfda7cc9595. 2019-12-05 20:12:27,231 INFO org.apache.flink.runtime.checkpoint.CheckpointCoordinator - No master state to restore 2019-12-05 20:12:27,232 INFO org.apache.flink.runtime.jobmaster.JobManagerRunner - JobManager runner for job General purpose test job (7c862506012fb04c0d565bfda7cc9595) was granted leadership with session id ---- at akka.tcp://flink@localhost:6123/user/jobmanager_1. 2019-12-05 20:12:27,233 INFO org.apache.flink.runtime.jobmaster.JobMaster - Starting execution of job