bulk-load

How to set parent for datastrore entity during bulkloading data by appcfg.py on Google App Engine?

由 天涯浪子 提交于 2019-12-11 15:01:42
问题 I'm trying to bulkload data using appcfg.py as described here. I got it working except setting parent entity, I can't seem to find info on how to set a parent entity for entity being created by the import. Can you point me to the right direction or provide a code snippet for my bulkloader.Loader implementation? 回答1: You need to override the generate_key method of your Loader class. See this post for details. 来源： https://stackoverflow.com/questions/2356158/how-to-set-parent-for-datastrore

Load MapReduce output data into HBase

由 女生的网名这么多〃 提交于 2019-12-11 11:27:50
问题 The last few days I've been experimenting with Hadoop. I'm running Hadoop in pseudo-distributed mode on Ubuntu 12.10 and successfully executed some standard MapReduce jobs. Next I wanted to start experimenting with HBase. I've installed HBase, played a bit in the shell. That all went fine so I wanted to experiment with HBase through a simple Java program. I wanted to import the output of one of the previous MapReduce jobs and load it into an HBase table. I've wrote a Mapper that should

How to save bulk records as transaction to SQL server more efficiently?

由 ◇◆丶佛笑我妖孽 提交于 2019-12-11 07:19:28
问题 I am working on a C# MVC application. In this application user is uploading data from EXCEL spreadsheet and data is showing to grid. After it has been showing to grid, user hit 'validate data' button. Application needs to perform UI (data length, empty field, data formats, etc.) validation and additionally SQL validations are also required for eg. record should not already exists already, any constraints, etc. After validation data is displayed to user for any errors associated with each row,

Optimizing InnoDB Insert Queries

由 会有一股神秘感。 提交于 2019-12-11 05:47:08
问题 According to slow query log, the following query (and similar queries) would take around 2s to execute occassionally: INSERT INTO incoming_gprs_data (data,type) VALUES ('3782379837891273|890128398120983891823881abcabc','GT100'); Table structure: CREATE TABLE `incoming_gprs_data` ( `id` int(200) NOT NULL AUTO_INCREMENT, `dt` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP, `data` text NOT NULL, `type` char(10) NOT NULL, `test_udp_id` int(20) NOT NULL, `parse_result` text NOT NULL, `completed`

why hbase KeyValueSortReducer need to sort all KeyValue

由 Deadly 提交于 2019-12-10 18:44:43
问题 I am learning Phoenix CSV Bulk Load recently and I found that the source code of org.apache.phoenix.mapreduce.CsvToKeyValueReducer will cause OOM ( java heap out of memory ) when columns are large in one row (In my case, 44 columns in one row and the avg size of one row is 4KB). What's more, this class is similar with the hbase bulk load reducer class - KeyValueSortReducer . It means that OOM may happen when using KeyValueSortReducer in my case. So, I have a question of KeyValueSortReducer -

How to write using BCP to a remote SQL Server?

由 北城余情 提交于 2019-12-10 09:27:15
问题 I have a remote SQL Server with a hostname I am using to connect to. BCP suggests to use bcp DBName.dbo.tablename in C:\test\yourfile.txt -c -T -t However when I try this it does not connect to DBName as that is not a valid alias. I get native error 2. How to I run BCP but specify an internet / network address to connect to, not an MSSQL server name? 回答1: How to I run BCP but specify an internet / network address to connect to, not an MSSQL server name? You can specify the IP address (here

Bulk loading into PostgreSQL from a remote client

由 谁说胖子不能爱 提交于 2019-12-09 06:08:26
I need to bulk load a large file into PostgreSQL. I would normally use the COPY command, but this file needs to be loaded from a remote client machine. With MSSQL, I can install the local tools and use bcp.exe on the client to connect to the server. Is there an equivalent way for PostgreSQL? If not, what is the recommended way of loading a large file from a client machine if I cannot copy the file to the server first? Thanks. COPY command is supported in PostgreSQL Protocol v3.0 (Postgresql 7.4 or newer). The only thing you need to use COPY from a remote client is a libpq enabled client such

Bulk request throws error in elasticsearch 6.1.1

由 不羁岁月 提交于 2019-12-09 02:29:59
问题 I recently upgraded to elasticsearch version 6.1.1 and now I can't bulk index documents from a json file. Wehn I do it inline, it works fine. Here are the contents of the document: {"index" : {}} {"name": "Carlson Barnes", "age": 34} {"index":{}} {"name": "Sheppard Stein","age": 39} {"index":{}} {"name": "Nixon Singleton","age": 36} {"index":{}} {"name": "Sharron Sosa","age": 33} {"index":{}} {"name": "Kendra Cabrera","age": 24} {"index":{}} {"name": "Young Robinson","age": 20} When I run

How to write using BCP to a remote SQL Server?

由 杀马特。学长 韩版系。学妹 提交于 2019-12-05 12:11:15
I have a remote SQL Server with a hostname I am using to connect to. BCP suggests to use bcp DBName.dbo.tablename in C:\test\yourfile.txt -c -T -t However when I try this it does not connect to DBName as that is not a valid alias. I get native error 2. How to I run BCP but specify an internet / network address to connect to, not an MSSQL server name? How to I run BCP but specify an internet / network address to connect to, not an MSSQL server name? You can specify the IP address (here just 127.0.0.1) instead of the server name. bcp DBName.dbo.tablename in "C:\test\yourfile.txt" -c -T -t -S"127

How to read a ARRAY of types returned from a stored proc using java?

由 ◇◆丶佛笑我妖孽 提交于 2019-12-05 02:48:41
问题 This is a continuation of the question posted under the following location: Java program to pass List of Bean to a oracle stored procedure - Pass entire list at one shot rather than appending objects one after the other I have been trying to enhance the stored procedure mentioned in the above link location and am confused in the implementation. Rather than VARCHAR2 as a output from the procedure i now want to return NUM_ARRAY as the output from the procedure. Can you please help me in
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