rkhachatryan opened a new pull request #13180:
URL: https://github.com/apache/flink/pull/13180
## What is the purpose of the change
*Improve logging when a checkpoint is declined (e.g. target directory is not
writable).*
## Verifying this change
Tested manually on a local cluster.
### Job Manager ###
```
2020-08-17 18:06:47,238 INFO
org.apache.flink.runtime.checkpoint.CheckpointCoordinator [] - Decline
checkpoint 4 by task 5271c210329e73bd743f3227edfb3b71_0_0 of job
815316dcc17ceea916d2a4da019aca13 at 127.0.1.1:44861-e3cf2c @
roman-ThinkPad-L380 (dataPort=33273).
org.apache.flink.util.SerializedThrowable: Could not materialize checkpoint
4 for operator ArtificalKeyedStateMapper_Kryo_and_Custom_Stateful (1/2).
Caused by: org.apache.flink.util.SerializedThrowable:
com.esotericsoftware.kryo.KryoException: java.io.IOException: Could not open
output stream for state backend
...
Caused by: org.apache.flink.util.SerializedThrowable: java.io.IOException:
Could not open output stream for state backend
...
Caused by: org.apache.flink.util.SerializedThrowable: Could not open output
stream for state backend
...
Caused by: org.apache.flink.util.SerializedThrowable: Mkdirs failed to
create
file:/tmp/forbidden/savepoint-e2e-test-chckpt-dir/815316dcc17ceea916d2a4da019aca13/chk-4
...
```
### Task Manager ###
```
2020-08-17 18:06:45,239 INFO
org.apache.flink.streaming.runtime.tasks.AsyncCheckpointRunnable [] -
ArtificalKeyedStateMapper_Kryo_and_Custom_Stateful (2/2) - asynchronous part of
checkpoint 2 could not be completed.
java.util.concurrent.ExecutionException:
com.esotericsoftware.kryo.KryoException: java.io.IOException: Could not open
output stream for state backend
Caused by: com.esotericsoftware.kryo.KryoException: java.io.IOException:
Could not open output stream for state backend
...
Caused by: java.io.IOException: Could not open output stream for state
backend
...
Caused by: java.io.IOException: Mkdirs failed to create
file:/tmp/forbidden/savepoint-e2e-test-chckpt-dir/815316dcc17ceea916d2a4da019aca13/chk-2
...
```
cc: @NicoK
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