Sean Busbey created HBASE-20691:
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Summary: Storage policy should allow deferring to HDFS
Key: HBASE-20691
URL: https://issues.apache.org/jira/browse/HBASE-20691
Project: HBase
Issue Type: Bug
Components: wal
Affects Versions: 2.0.0, 1.5.0
Reporter: Sean Busbey
Fix For: 2.1.0, 1.5.0
In HBase 1.1 - 1.4 we can defer storage policy decisions to HDFS by using
"NONE" as storage type in hbase configs.
As described on this the [dev@hbase thread "WAL storage policies and
interactions with Hadoop admin
tools."|https://lists.apache.org/thread.html/d220726fab4bb4c9e117ecc8f44246402dd97bfc986a57eb22311117@%3Cdev.hbase.apache.org%3E]
we no longer have that option in 2.0.0 and 1.5.0 (as the branch is now).
Additionally, we can't set the policy to HOT in the event that HDFS has changed
the policy for a parent directory of our WALs.
We should put back that ability. Presuming this is done by re-adopting the
"NONE" placeholder variable, we need to ensure that value doesn't get passed to
HDFS APIs. Since it isn't a valid storage policy attempting to use it will
cause a bunch of logging churn (which will be a regression of the problem
HBASE-18118 sought to fix).
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