"The reason is that in order to impose total order of all results, there has to be one reducer to sort the final output. If the number of rows in the output is too large, the single reducer could take a very long time to finish." [t]2020-09-19 20:44:20
関連するかも情報
"The limit clause is not necessary if you set hive.mapred.mode to nonstrict."
"The reason is that in order to impose total order of all results, there has to be one reducer to sort the final output. If the number of rows in the output is too large, the single reducer could take a very long time to finish." [t]2020-09-19 20:44:20