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https://issues.apache.org/jira/browse/HDFS-10207?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15250903#comment-15250903
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Xiaoyu Yao commented on HDFS-10207:
-----------------------------------
There are 4 more checkstyle issues (in addition to the 3 imports) from previous
Jenkins . Please fix those. Thanks!
{code}
./hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java:284:
private String IPC_CLIENT_RPC_BACKOFF_ENABLE;:18: Name
'IPC_CLIENT_RPC_BACKOFF_ENABLE' must match pattern '^[a-z][a-zA-Z0-9]*$'.
./hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java:287:
final TreeSet<String> RECONFIGURABLE_PROPERTIES = Sets.newTreeSet(Lists:25:
Name 'RECONFIGURABLE_PROPERTIES' must match pattern '^[a-z][a-zA-Z0-9]*$'.
./hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java:287:
final TreeSet<String> RECONFIGURABLE_PROPERTIES = Sets.newTreeSet(Lists:25:
Variable 'RECONFIGURABLE_PROPERTIES' must be private and have accessor methods.
./hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java:2041:
.setHeartbeatRecheckInterval(DFS_NAMENODE_HEARTBEAT_RECHECK_INTERVAL_DEFAULT);:
Line is longer than 80 characters (found 90).
{code}
> Support enable Hadoop IPC backoff without namenode restart
> ----------------------------------------------------------
>
> Key: HDFS-10207
> URL: https://issues.apache.org/jira/browse/HDFS-10207
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Xiaoyu Yao
> Assignee: Xiaobing Zhou
> Attachments: HDFS-10207-HDFS-9000.000.patch,
> HDFS-10207-HDFS-9000.001.patch, HDFS-10207-HDFS-9000.002.patch,
> HDFS-10207-HDFS-9000.003.patch, HDFS-10207-HDFS-9000.004.patch,
> HDFS-10207-HDFS-9000.005.patch, HDFS-10207-HDFS-9000.006.patch,
> HDFS-10207-HDFS-9000.007.patch
>
>
> It will be useful to allow changing {{ipc.#port#.backoff.enable}} without a
> namenode restart to protect namenode from being overloaded.
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