Hi Kevin,

Sorry for the late reply. I collected some feedback from other folks and have 
two more questions.

1. Did you enable incremental checkpoints for your job and is the checkpoint 
you recover from incremental? 

2. I saw in your configuration that you set 
`state.backend.rocksdb.block.cache-size` and 
`state.backend.rocksdb.predefined.options` by doing 
 so you overwrite the values Flink automatically sets. Can you confirm that 
this is on purpose? The value for block.cache-size seems to be very small.

You can also enable the native RocksDb metrics [1] to get a more detail view of 
the RocksDb memory consumption but be carefully because it may degrade the 
performance of your job.

Best,
Fabian

[1] 
https://nightlies.apache.org/flink/flink-docs-master/docs/deployment/config/#rocksdb-native-metrics


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