英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：


请选择你想看的字典辞典：
单词字典翻译
col0查看　col0　在百度字典中的解释百度英翻中〔查看〕
col0查看　col0　在Google字典中的解释Google英翻中〔查看〕
col0查看　col0　在Yahoo字典中的解释Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • What is _col0 in hive explain plan? - Cloudera Community
    Hello, I am trying to better understand hive explain and hive performance I have a simple count(*) that is failing with OOM Rather than just increasing tez container size memory, im trying to understand why its failing Explain plan below: It looks like its grouping by _col0 What is the real name
  • Re: What is _col0 in hive explain plan? - Cloudera Community
    "_col0" is an internal generated column If you run a "select count (*) from foo" hive does not have to read any columns from the table, it just needs to count the records What the explain plan says is that the table scan and select operator first generate empty records from the table
  • What is _col0 in hive explain plan? - Cloudera Community
    "_col0" is an internal generated column If you run a "select count (*) from foo" hive does not have to read any columns from the table, it just needs to count the records What the explain plan says is that the table scan and select operator first generate empty records from the table
  • Hive Runtime Error while processing row (tag=0)
    When testing out a query, we encounter the error below Any hint on how to resolve this ? Vertex re-running, - 117846
  • hive vectorization union all problem - Cloudera Community
    @Ozhan Gulen There are certain known issues with respect to union all and tez vectorization Could you share the execution plan for union all for more insight on the issue?
  • Re: Spark Warning: WARN ReaderImpl: Cannot find fi. . . - Cloudera . . .
    17 10 05 12:09:03 WARN ReaderImpl: Cannot find field for: person_key in _col0, _col1, _col2, _col3, _col4, _col5, _col6, _col7, _col8, _col9, But does give correct results I want to understand what this means I did not find anything on the net I want this resolved because though it is giving the correct results, it is taking very long to
  • Hive mapper not initializing - Cloudera Community - 130092
    What is the total quantity of memory dedicated to YARN in your cluster (check the Yarn WebUI to know it)? Could you try reducing the number of reducers (you have 366 + 174 on the main reduce vertices) for instance by playing with the variable hive exec reducers bytes per reducer? If you only have 75 mappers as input, I am not sure you need that many reducers
  • Re: Hive Runtime Error while processing row (tag=0)
    There was a known issue with empty partitions files tables: https: issues apache org jira browse HIVE-13394 Is your case such a case?
  • Merge command throwing error message - Cloudera Community
    hive merge cardinality check=false is a bad idea The logic controlled by this property checks if the ON clause of your Merge statement is such that more than 1 row from source side matches the same row from target side (which only happens in WHEN MATCHED clause) Logically what this means is that the query is asking the system to update 1 existing row in target in 2 (or more) different ways





中文字典-英文字典  2005-2009