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https://issues.apache.org/jira/browse/FLINK-23719?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jark Wu reassigned FLINK-23719:
-------------------------------
Assignee: Liebing Yu
> Support switch WAL in Flink SQL DDL options for HBase sink
> -----------------------------------------------------------
>
> Key: FLINK-23719
> URL: https://issues.apache.org/jira/browse/FLINK-23719
> Project: Flink
> Issue Type: New Feature
> Components: Connectors / HBase
> Affects Versions: 1.13.2
> Reporter: Carl
> Assignee: Liebing Yu
> Priority: Major
>
> My application scenario is like this:
> Use Flink SQL to write the batch data of hive table to a new HBase table
> every day.
> In this case, I think it is appropriate to disable WAL for the following
> reasons:
> 1. If an error occurs, i can re-run it. No high security is required.
> 2. The write speed will be greatly improved. No additional writing to the wal
> disk log
> 3. Save disk IO resources of the cluster
>
> However, the HBase official website is described below,
> h4. 70.6.10. Disabling the WAL
> It is possible to disable the WAL, to improve performance in certain specific
> situations. However, disabling the WAL puts your data at risk. The only
> situation where this is recommended is during a bulk load. This is because,
> in the event of a problem, the bulk load can be re-run with no risk of data
> loss.
> The WAL is disabled by calling the HBase client field
> {{Mutation.writeToWAL(false)}}. Use the
> {{Mutation.setDurability(Durability.SKIP_WAL)}} and Mutation.getDurability()
> methods to set and get the field’s value. There is no way to disable the WAL
> for only a specific table.
> [http://hbase.apache.org/2.3/book.html#hbase_default_configurations]
>
> So i think it needs API level support, not properties support.
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