Rungroj Maipradit created HDFS-15361:
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Summary: Implement clear method in ErasureCodingPolicyManager class
Key: HDFS-15361
URL: https://issues.apache.org/jira/browse/HDFS-15361
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Rungroj Maipradit
In a research project, we analyzed the source code of Hadoop looking for
comments with on-hold SATDs (self-admitted technical debt) that could be fixed
already. An on-hold SATD is a TODO/FIXME comment blocked by an issue. If this
blocking issue is already resolved, the related todo can be implemented (or
sometimes it is already implemented, but the comment is left in the code
causing confusions). As we found a few instances of these in HDFS, we decided
to collect them in a ticket, so they are documented and can be addressed sooner
or later.
Currently, the clear method of ErasureCodingPolicyManager class contains TODO
with a code comment as a placeholder referencing HDFS-7337.
The comment still exists in trunk, while HDFS-7337 is already resolved as
fixed. Yet, the clear method is not implemented.
{code:java}
// TODO: we should only clear policies loaded from NN metadata.
// This is a placeholder for HDFS-7337.
{code}
Comment location:
https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/ErasureCodingPolicyManager.java#L287
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