[hadoop] branch trunk updated: HDFS-16408. Ensure LeaseRecheckIntervalMs is greater than zero (#3856)

[sodonnell]

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sodonnell pushed a commit to branch trunk
in repository https://gitbox.apache.org/repos/asf/hadoop.git


The following commit(s) were added to refs/heads/trunk by this push:
     new e1d0aa9  HDFS-16408. Ensure LeaseRecheckIntervalMs is greater than 
zero (#3856)
e1d0aa9 is described below

commit e1d0aa9ee5851d3cdc3b125daebe5cc9305ad6f0
Author: liever18 <47295183+lieve...@users.noreply.github.com>
AuthorDate: Wed Jan 5 23:42:58 2022 +0800

    HDFS-16408. Ensure LeaseRecheckIntervalMs is greater than zero (#3856)
---
 .../java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java     | 4 ++++
 1 file changed, 4 insertions(+)

diff --git 
a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
 
b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
index c07115e..610303a 100644
--- 
a/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
+++ 
b/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
@@ -1014,6 +1014,10 @@ public class FSNamesystem implements Namesystem, 
FSNamesystemMBean,
       this.leaseRecheckIntervalMs = conf.getLong(
           DFS_NAMENODE_LEASE_RECHECK_INTERVAL_MS_KEY,
           DFS_NAMENODE_LEASE_RECHECK_INTERVAL_MS_DEFAULT);
+      Preconditions.checkArgument(
+              leaseRecheckIntervalMs > 0,
+              DFSConfigKeys.DFS_NAMENODE_LEASE_RECHECK_INTERVAL_MS_KEY +
+                      " must be greater than zero");
       this.maxLockHoldToReleaseLeaseMs = conf.getLong(
           DFS_NAMENODE_MAX_LOCK_HOLD_TO_RELEASE_LEASE_MS_KEY,
           DFS_NAMENODE_MAX_LOCK_HOLD_TO_RELEASE_LEASE_MS_DEFAULT);

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