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Questions tagged [delta]

A Delta is a file that represents the changes between two or more revisions of structured or semi-structured data. Use delta-lake tag for questions about Delta Lake file format.

References

312 questions
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Sphinx main/delta indexing, sql_query_killlist

I am currently using Sphinx for indexing a MySQL query with 20+ million records. I am using a delta index to update the main index and add all new records. Unfortunately allot of changes to the tables are deleted. I understand that I can use…
gt-info
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What Delta Encoding/Compression Algorithm libraries are there for Java?

So I'm reading up on delta encoding, and I was looking around for some good examples of it. I think Google Chrome uses something like that for patch updates, rsync might, and the Wikipedia article implies that alot of online backup tools use…
Nick Klauer
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SOLR delta-import timestamp issue

I'm new to SOLR and was doing some research on this technology. I now have a question regarding the delta-import function so I looked on SO and found this: Solr DataImportHandler delta import. In the answer there is a field [date_update] mentioned…
mrd3650
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Azure Active Directory Group Delta API

I am using the Azure Active Directory Group API for my tenant to list all the groups. I am using GET DELTA https://learn.microsoft.com/en-us/graph/api/group-delta?view=graph-rest-1.0&tabs=http GET…
Shambhavi Rai
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How can I programmatically change the position of a UIScrollView based on another views change?

I have a scrollView that I'd like to programmatically move based on the delta, or change of another scrollView. So if my first scrollView moves down 10px, I need to get that number, and adjust the second scrollView down 10px, and allow them to be in…
Jarom
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Is there a discrete dirac delta function in Julia?

The title sums it up. I have seen some mentions in the RatFun and SpectralMeasures package but I am mostly looking for a function analogous to the ones found in the Sympy module for Python. Edit: Thanks everyone for your answers and comments. I was…
Madlad
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Bitmap RLE decompression 'delta' meaning

On my research for RLE decompression of Bitmaps i have stumbled across a possible "delta"-combination, which basically skips a certain amount of "dont care" pixels. I just cannot wrap my head around how this should work. How am i supposed to just…
Halid Zehic
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Does IPFS provide block-level file copying feature?

Update 11-14-2019: Please see the following discussion for feature request to IPFS: git-diff feature: Improve efficiency of IPFS for sharing updated file. Decrease file/block duplication There is a .tar.gz file, which contains a data.txt file,…
alper
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Drive Item Detect Sharing Changes via Delta and Notifications

I'm having trouble detecting sharing/permissions changes (e.g. shared link) for drive items. Couple of issues I'm running into: Issue 1: When Calling Delta: returns very little information about a shared drive item E.g: "shared": { …
Tomer
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Merge only delta changes in git branch

We have 2 git branches - master and dev. The master contains files to be deployed to production and dev contains only files that needs modification. At any point of time the master git branch will have 10+ files where as the dev will have only 1.…
Khilesh Chauhan
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Easiest way to get delta between two DataFrames

I am working within Microsoft Azure Databricks with two Dataframes. I have already a Dataframe which contains my "Masterdata". I am receiving daily also a full data package with "all" records. But those within this Dataframe there can be changes…
STORM
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Wrote my first Python program, would appreciate input on user input incrementing

I am writing a function to ask the user for a date. I would like the user to be able to enter the date in a familiar format: MM-DD-YYYY I've tried a number of variations but have been unsuccessful in being able to calculate the difference in days in…
Caleb
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database schema eligible for delta synchronization

it's a question for discussion only. Right now, I need to re-design a mysql database table. Basically, this table contains all the contract records I synchronized from another database. The contract record can be modified, deleted or users can add…
WilliamLou
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Efficiently store daily dumps in Hadoop HDFS

I believe a common usage pattern for Hadoop is to build a "data lake" by loading regular (e.g. daily) snapshots of data from operational systems. For many systems, the rate of change from day to day is typically less than 5% of rows (and even when a…
Todd Owen
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Change from baseline for repeated ids with missing baseline points

Change from baseline for repeated ids with missing baseline points A similar question has been asked and answered below: Change from baseline for repeated ids My question differs from the original question in that I have missing baseline values. I…
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