We investigate the effect of omnipresent cloud storage on distributed computing. To this end, we specify a network model with links of prescribed bandwidth
Fan-out Querying for Federations in SQL Azure (Part 2): Scalable Fan-out Queries with TOP, ORDER BY, DISTINCT and Other Powerful Aggregates, MapReduce Style!Welcome back. In the previous post: Introduction to Fan-out Querying, we covered the basics and......
You can use HBaseContext to use HBase in Spark applications, construct rowkey of the data to be inserted into RDDs, write RDDs into HFiles through the BulkLoad interface of HBaseContext. The following command is used to import the generated HFiles to the HBase table and will not be des...
In a nutshell, we created a very simple infrastructure that can use MapReduce to either do computationally intensive processing out on the “mesh” nodes or, alternatively, do data collection out on those nodes, with the results being correlated and aggregated into one final result that’s retur...
This alarm indicates that the ZNodes capacity usage in the HBase service has exceeded the threshold. If this alarm is not handled in a timely manner, the problem severity may be escalated toCritical, affecting data writing. Possible Causes ...
In total, 1745 protein-coding genes have a copy number range > 2.5 across the Dog10K collection; of these, 546 genes have a single sample that has an outlier estimated copy number. Using Manta [66], which utilizes read-pair and split-read signatures to identify variation, and Graph...
As we've seen, in a MapReduce job, Hadoop streams through input files, passing each line to a mapper. If the file is editable, the contents can potentially change during the execution of the task. Content already processed might change or be removed entirely, invalidating the result of ...
Splittable compression formats are especially suitable for MapReduce; see Compression and Input Splits for further discussion. Codecs A codec is the implementation of a compression-decompression algorithm. In Hadoop, a codec is represented by an implementation of the CompressionCodec interface. So, ...
ADM cells show expression of both of these markers in the scRNA data. e, Cell-type annotation and genomic alterations mapped across acinar, normal ductal, PanIN and ADM populations. UMAP of cell-type annotation indicates two distinct ADM populations annotated as ADM_Normal and ADM_Tumor. f, ...
Use code to declare that the MOB mode for storing data is used, the unit of MOB_THRESHOLD is byte: hbase(main):009:0> create 't3',{NAME => 'd', MOB_THRESHOLD => '102400', IS_MOB => 'true'} 0 row(s) in 0.3450 seconds => Hbase::Table - t3 hbase(main):010:0> describe...