[
https://issues.apache.org/jira/browse/HDFS-9314?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15038629#comment-15038629
]
Xiao Chen commented on HDFS-9314:
---------------------------------
As [discussed in
HDFS-8647|https://issues.apache.org/jira/browse/HDFS-8647?focusedCommentId=15032747&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-15032747],
I'm providing branch2.6/2.7 patch for this JIRA. [~zhz] please help review,
thanks.
Backported from branch-2, and conflicts below:
-
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockPlacementPolicyDefault.java
HDFS-9007 which is in branch-2 but not 2.6/2.7. Mostly due to the extra
parameter of chooseReplicaToDelete. Resolved by directly copying HDFS-9414's
branch-2 commit (which has 9007) to delete the extra param - it’s not used
anyways, and this makes backporting easier. See conflicts below.) Also fixed
branch2.6 for diamond operator, which is the only diff between 2.6 and 2.7
patches.
-
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockPlacementPolicyRackFaultTolerant.java
Not exist.
-
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockPlacementPolicyWithUpgradeDomain.java
Not exist.
-
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestReplicationPolicy.java
Due to {{BlockPlacementPolicyDefault#chooseReplicaToDelete}}. Applied
HDFS-9414's branch-2 commit directly.
-
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestReplicationPolicyWithNodeGroup.java
Due to {{BlockPlacementPolicyDefault#chooseReplicaToDelete}}. Applied
HDFS-9414's branch-2 commit directly.
-
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestReplicationPolicyWithUpgradeDomain.java
Not exist.
-
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestDNFencing.java
Due to {{BlockPlacementPolicyDefault#chooseReplicaToDelete}}. Applied
HDFS-9414's branch-2 commit directly.
> Improve BlockPlacementPolicyDefault's picking of excess replicas
> ----------------------------------------------------------------
>
> Key: HDFS-9314
> URL: https://issues.apache.org/jira/browse/HDFS-9314
> Project: Hadoop HDFS
> Issue Type: Improvement
> Reporter: Ming Ma
> Assignee: Xiao Chen
> Fix For: 2.8.0
>
> Attachments: HDFS-9314.001.patch, HDFS-9314.002.patch,
> HDFS-9314.003.patch, HDFS-9314.004.patch, HDFS-9314.005.patch,
> HDFS-9314.006.patch, HDFS-9314.branch26.patch, HDFS-9314.branch27.patch
>
>
> The test case used in HDFS-9313 identified NullPointerException as well as
> the limitation of excess replica picking. If the current replicas are on
> {SSD(rack r1), DISK(rack 2), DISK(rack 3), DISK(rack 3)} and the storage
> policy changes to HOT_STORAGE_POLICY_ID, BlockPlacementPolicyDefault's won't
> be able to delete SSD replica.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
