Re: Disable WAL in RocksDB recovery

2020-09-21 Thread Yu Li
> Regards, > Juha > -- > *From:* Yu Li > *Sent:* Friday, September 18, 2020 3:58 PM > *To:* Juha Mynttinen > *Cc:* user@flink.apache.org > *Subject:* Re: Disable WAL in RocksDB recovery > > Thanks for bringing this up Juha, and good catch. > > We actually are

Re: Disable WAL in RocksDB recovery

2020-09-21 Thread Juha Mynttinen
WAL in RocksDB recovery Thanks for bringing this up Juha, and good catch. We actually are disabling WAL for routine writes by default when using RocksDB and never encountered segment fault issues. However, from history in FLINK-8922, segment fault issue occurs during restore if WAL is disabled

Re: Disable WAL in RocksDB recovery

2020-09-18 Thread Yu Li
Thanks for bringing this up Juha, and good catch. We actually are disabling WAL for routine writes by default when using RocksDB and never encountered segment fault issues. However, from history in FLINK-8922, segment fault issue occurs during restore if WAL is disabled, so I guess the root cause