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We will mostly be wanting to bring in a single partition at a time, but there will also be occasions where would we need to pull down the whole table. Using the --direct option Use this with your oraoop query -D oraoop. Email Required, but never shown. I have a very large table in Oracle with hundreds of partitions and we want to be able to import it to parquet in HDFS a partition at a time as part of a ETL process. Cheers Josh reply permalink.

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Joshua Baxter Hi David, Sorry for the slow reply, I haven't had access to the cluster for the last couple of weeks. Improving the question-asking experience. Is was wondering if there is any way to enable it for just this step to help reduce latency?

Do you need to get just one partition, or is the ultimate goal to use all partitions? If you edit oraoop-site. This patch seems to have fixed the issue oraop i am now able to pull down evenly sized parquet files with Oraoop.

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Email Required, but never shown. Thanks Josh On Wed, Nov 5, at 2: Impala is the target platform that the data is for so we also want to keep the file sizes under the cluster block size to prevent remote streaming when we use the data. Data Connector for Oracle and Hadoop oraiop disabled. I think the incorrect chunking is exactly my problem. Joshua Baxter Thanks for your help David.

Though i could see the settings had taken effect from the query monitor, on repeated runs it didn't really take much off the initial query time. Ronak Patel 3, 1 1 gold badge 12 12 silver badges 24 24 bronze badges. Cheers Josh reply permalink. The table has evolved over time and there is not a column that doesn't have significant skew meaning that mappers get very uneven numbers when using the standard sqoop connector and split-by.

[Sqoop-user] Using more than a single mapper per partition with OraOop - Grokbase

Joshua Baxter We will mostly be wanting otaoop bring in a single partition at a time, but there will also be occasions where would we need to pull down the whole table. I am using sqoop 1. As for the error — this looks to be related in that you have so many blocks it has caused the number not to fit into an int — this should be a simple fix to change the datatype to a a long throughout the code.

Oraoop connector is an internal utility of sqoop from version 1. Also check if oraoop is configured for correctly: Oraoo; Saurav Aman Saurav 3 3 silver badges oraoo 14 bronze badges. On the issue of the time taken by the block fetching.

I wanted to know since oraoop is built in sqoop 1. Stack Overflow works best with JavaScript enabled. Can you let us know the issue number once it is logged. Encountered IOException running import job: Nov 3, at 9: Post as a guest Name. Using the --direct option Use this with your oraoop query -D oraoop. Firstly, after launching the job I am now getting the following error after the query to fetch the block information.

Joshua Baxter Nov 3, at 9: Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. Using more oraoo a oraooo mapper per partition with OraOop Thanks for your help David.

You need to specify the --direct parameter if I remember correctly.