What is hadoop sequence file

When you want to use data from sequence files as the input to MapReduce. That's all for this topic Sequence File in Hadoop. If you have any doubt or any suggestions to make please drop a comment. Friday, April 5, Sequence File in Hadoop.

Table of contents. Posted by Anshudeep. Labels: Hadoop , Hadoop-IO. No comments:. Post a Comment. Metadata — SequenceFile. Metadata for this file. Sync — A sync marker to denote end of the header. SequenceFile provides SequenceFile. Writer , SequenceFile. Reader and SequenceFile. Sorter classes for writing, reading and sorting respectively. The recommended way is to use the static createWriter methods provided by the SequenceFile to chose the preferred format.

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Save my name, email, and site URL in my browser for next time I post a comment. Block compression provide better compression ratio than Record compression.

Block compression is generally the preferred option when using SequenceFile. Block here is unrelated to HDFS or filesystem block. Glorfindel You are sure the link works? Sorry, I couldnt open the link.

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