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我對Hadoop版本和新的API非常困惑。我有一個關於Hadoop 0.20.203的項目,我認爲是時候升級它了。我希望使用具有YARN的版本,該版本是0.23或2.0.2。由於根據Hadoop站點的2.0.2類似0.23但更好,我已經導入了2.0.2版本。新的API應該在org.apache.hadoop.mapreduce中,而不是在org.apache.hadoop.mapred中,我已經從0.20版本獲得了這個包,所以我不必改變任何東西。 Job類的所有構造函數都被棄用,所以我應該如何使用這個類?當我運行我的項目時,我也收到很多棄用警告,提到mapred軟件包。Hadoop發佈和新的API
我編輯我的問題,包括過時的東西,我有我的輸出
13/02/12 00:52:57 WARN conf.Configuration: mapred.jar is deprecated. Instead, use mapreduce.job.jar
13/02/12 00:52:57 WARN conf.Configuration: mapred.cache.files is deprecated. Instead, use mapreduce.job.cache.files
13/02/12 00:52:57 WARN conf.Configuration: mapred.reduce.tasks is deprecated. Instead, use mapreduce.job.reduces
13/02/12 00:52:57 WARN conf.Configuration: mapred.output.value.class is deprecated. Instead, use mapreduce.job.output.value.class
13/02/12 00:52:57 WARN conf.Configuration: mapred.mapoutput.value.class is deprecated. Instead, use mapreduce.map.output.value.class
13/02/12 00:52:57 WARN conf.Configuration: mapreduce.map.class is deprecated. Instead, use mapreduce.job.map.class
13/02/12 00:52:57 WARN conf.Configuration: mapred.job.name is deprecated. Instead, use mapreduce.job.name
13/02/12 00:52:57 WARN conf.Configuration: mapreduce.reduce.class is deprecated. Instead, use mapreduce.job.reduce.class
13/02/12 00:52:57 WARN conf.Configuration: mapred.input.dir is deprecated. Instead, use mapreduce.input.fileinputformat.inputdir
13/02/12 00:52:57 WARN conf.Configuration: mapred.output.dir is deprecated. Instead, use mapreduce.output.fileoutputformat.outputdir
13/02/12 00:52:57 WARN conf.Configuration: mapred.max.split.size is deprecated. Instead, use mapreduce.input.fileinputformat.split.maxsize
13/02/12 00:52:57 WARN conf.Configuration: mapred.map.tasks is deprecated. Instead, use mapreduce.job.maps
13/02/12 00:52:57 WARN conf.Configuration: mapred.cache.files.timestamps is deprecated. Instead, use mapreduce.job.cache.files.timestamps
13/02/12 00:52:57 WARN conf.Configuration: mapred.output.key.class is deprecated. Instead, use mapreduce.job.output.key.class
13/02/12 00:52:57 WARN conf.Configuration: mapred.mapoutput.key.class is deprecated. Instead, use mapreduce.map.output.key.class
13/02/12 00:52:57 WARN conf.Configuration: mapred.working.dir is deprecated. Instead, use mapreduce.job.working.dir
什麼錯誤? – 2013-02-12 06:15:44
爲什麼不按照警告中的建議使用新API中的相應類? – Amar 2013-02-13 19:27:44
Praveen我沒有收到任何錯誤,我只是對發佈和API感到困惑。我想我將使用1.X.X系列,因爲我不會大規模使用它。 Amar我沒有使用任何mapred package.I只使用mapreduce package.Dont知道爲什麼我得到這些警告。 – jojoba 2013-02-14 14:31:18