HBASE-26512 Make timestamp format configurable in HBase shell scan output

Signed-off-by: Josh Elser <[email protected]
Signed-off-by: Peter Somogyi <[email protected]>

Author: stoty

hbase-common/src/main/java/org/apache/hadoop/hbase/HConstants.java

@@ -1602,6 +1602,11 @@ public enum OperationStatusCode {
     "hbase.regionserver.slowlog.systable.enabled";
   public static final boolean DEFAULT_SLOW_LOG_SYS_TABLE_ENABLED_KEY = false;
 
+  public static final String SHELL_TIMESTAMP_FORMAT_EPOCH_KEY =
+      "hbase.shell.timestamp.format.epoch";
+
+  public static final boolean DEFAULT_SHELL_TIMESTAMP_FORMAT_EPOCH = false;
+
   /**
    * Number of rows in a batch operation above which a warning will be logged.
    */

hbase-shell/src/main/ruby/hbase/table.rb

@@ -119,6 +119,9 @@ def initialize(table, shell)
       @name = @table.getName.getNameAsString
       @shell = shell
       @converters = {}
+      @timestamp_format_epoch = table.getConfiguration.getBoolean(
+          HConstants::SHELL_TIMESTAMP_FORMAT_EPOCH_KEY,
+          HConstants::DEFAULT_SHELL_TIMESTAMP_FORMAT_EPOCH)
     end
 
     def close
@@ -751,8 +754,12 @@ def parse_column_name(column)
     end
 
     def toLocalDateTime(millis)
-      instant = java.time.Instant.ofEpochMilli(millis)
-      return java.time.LocalDateTime.ofInstant(instant, java.time.ZoneId.systemDefault()).toString
+      if @timestamp_format_epoch
+        return millis
+      else
+        instant = java.time.Instant.ofEpochMilli(millis)
+        return java.time.LocalDateTime.ofInstant(instant, java.time.ZoneId.systemDefault()).toString
+      end
     end
 
     # Make a String of the passed kv