HDFS-10671. Fix typo in HdfsRollingUpgrade.md. Contributed by Yiqun Lin.
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@ -43,7 +43,7 @@ Introduction
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*HDFS rolling upgrade* allows upgrading individual HDFS daemons.
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For examples, the datanodes can be upgraded independent of the namenodes.
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A namenode can be upgraded independent of the other namenodes.
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The namenodes can be upgraded independent of datanods and journal nodes.
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The namenodes can be upgraded independent of datanodes and journal nodes.
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Upgrade
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