ndimiduk commented on a change in pull request #1597:
URL: https://github.com/apache/hbase/pull/1597#discussion_r416190611
##########
File path: conf/hbase-site.xml
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@@ -21,4 +20,31 @@
*/
-->
<configuration>
+ <!--
+ The following properties are set for running HBase as a single process on a
+ developer workstation. With this configuration, HBase is running in
+ "stand-alone" mode and without a distributed file system. In this mode, and
+ without further configuration, HBase and ZooKeeper data are stored on the
+ local filesystem, in a path under the value configured for `hbase.tmp.dir`.
+ This value is overridden from its default value of `/tmp` because many
+ systems clean `/tmp` on a regular basis. Instead, it points to a path
within
+ this HBase installation directory.
+
+ Running against the `LocalFileSystem`, as opposed to a distributed
+ filesystem, runs the risk of data integrity issues and data loss. Normally
+ HBase will refuse to run in such an environment. Setting
+ `hbase.unsafe.stream.capability.enforce` to `false` overrides this
behavior,
+ permitting operation. This configuration is for the developer workstation
+ only and __should not be used in production!__
Review comment:
> The only other thing I could think of would be to carry
hbase.cluster.distributed=false here to try to be more confident that they are
actually changing the config, giving it some thought. I'm mostly just thinking
out loud though. I'm not personally convinced that turning off the sync
enforcement OOTB is "worrisome".
I suppose it's better here than by default, as was done in the patch that
this PR reverts.
IMHO, without a `LocalFIleSystem` that's actually safe to use, none of these
solutions are very pleasant.
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