Hexiaoqiao commented on code in PR #6112:
URL: https://github.com/apache/hadoop/pull/6112#discussion_r1337110886
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hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestNameNodeReconfigure.java:
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@@ -654,6 +655,52 @@ public void
testReconfigureDecommissionBackoffMonitorParameters()
}
}
+ @Test
+ public void testReconfigureMinBlocksForWrite() throws Exception {
+ final NameNode nameNode = cluster.getNameNode(0);
+ final BlockManager bm = nameNode.getNamesystem().getBlockManager();
+ String key =
DFSConfigKeys.DFS_NAMENODE_BLOCKPLACEMENTPOLICY_MIN_BLOCKS_FOR_WRITE_KEY;
+ int defaultVal =
DFSConfigKeys.DFS_NAMENODE_BLOCKPLACEMENTPOLICY_MIN_BLOCKS_FOR_WRITE_DEFAULT;
+
+ // Ensure we cannot set any of the parameters negative
+ ReconfigurationException reconfigurationException =
+ LambdaTestUtils.intercept(ReconfigurationException.class,
+ () -> nameNode.reconfigurePropertyImpl(key, "-20"));
+ assertTrue(reconfigurationException.getCause() instanceof
IllegalArgumentException);
+ assertEquals(key+" = '-20' is invalid. It should be a "
Review Comment:
Leave blank space before and after plus sign. The same as L671,L680,L681
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