Reviewed-by: Ayush Saxena <ayushsaxena@apache.org> Signed-off-by: Akira Ajisaka <aajisaka@apache.org> (cherry picked from commit b87bac13e43c7a0b4f16002f5aff9d8c596413a9)
HDFS-16075. Use empty array constants present in StorageType and DatanodeInfo to avoid creating redundant objects (#3115)
HADOOP-17769. Upgrade JUnit to 4.13.2. fixes TestBlockRecovery (#3130). Contributed by Ahmed Hussein. (#3138)
HADOOP-17769. Upgrade JUnit to 4.13.2. fixes TestBlockRecovery (#3130). Contributed by Ahmed Hussein. (#3138)
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