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https://issues.apache.org/jira/browse/HDFS-13350?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16427297#comment-16427297
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Hudson commented on HDFS-13350:
-------------------------------

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #13928 (See 
[https://builds.apache.org/job/Hadoop-trunk-Commit/13928/])
HDFS-13350. Negative legacy block ID will confuse Erasure Coding to be (lei: 
rev d737bf99d44ce34cd01baad716d23df269267c95)
* (edit) 
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
* (edit) 
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockIdManager.java
* (edit) 
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManagerSafeMode.java
* (edit) 
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/CorruptReplicasMap.java
* (edit) 
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/InvalidateBlocks.java
* (edit) 
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestCorruptReplicaInfo.java
* (edit) 
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestBlockManager.java
* (edit) 
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlocksMap.java


> 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
>            Priority: Major
>             Fix For: 3.2.0, 3.1.1, 3.0.3
>
>         Attachments: HDFS-13350.00.patch, HDFS-13350.01.patch, 
> HDFS-13350.02.patch
>
>
> 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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