Lei (Eddy) Xu created HDFS-13350:
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Summary: Negative legacy block ID will confuse Erasure Coding to
be considered as striped block
Key: HDFS-13350
URL: https://issues.apache.org/jira/browse/HDFS-13350
Project: Hadoop HDFS
Issue Type: Bug
Components: erasure-coding
Affects Versions: 3.0.1
Reporter: Lei (Eddy) Xu
Assignee: Lei (Eddy) Xu
HDFS-4645 has changed HDFS block ID from randomly generated to sequential
positive IDs. And later on, HDFS EC was built on the assumption that normal 3x
replica block IDs are positive, so EC re-use negative IDs as striped blocks.
However, there are legacy block IDs can be negative in the system, we should
not use hardcode method to check whether a block is stripe or not:
{code}
public static boolean isStripedBlockID(long id) {
return BlockType.fromBlockId(id) == STRIPED;
}
{code}
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