Oak | A Scalable Concurrent Key-Value Map for Big Data Analytics | Key Value Database library
kandi X-RAY | Oak Summary
kandi X-RAY | Oak Summary
Oak (Off-heap Allocated Keys) is a scalable, concurrent, in-memory Key-Value (KV) map. OakMap is a concurrent Key-Value Map that keeps all keys and values off-heap. This allows storing more data (up to 3 times more data) compare to using the standard JVM heap management, albeit using the same memory footprint. OakMap implements the industry-standard Java8 ConcurrentNavigableMap API. It provides strong (atomic) semantics for read, write, and read-modify-write operations, as well as (non-atomic) range query (scan) operations, both forward and backward. OakMap is optimized for big keys and values, in particular, for incremental maintenance of objects (update in-place). It is faster and scales better with additional CPU cores than the popular Java ConcurrentNavigableMap ConcurrentSkipListMap.
Support
Quality
Security
License
Reuse
Top functions reviewed by kandi - BETA
- Allocates a new slice of the given size
- Allocates a new block
- Associates a block with the given size
- Copy all the allocation info from another block slice
- MurmurHash3 128 - bit 128 - bit variant
- Mix with 64 bits
- MurmurHash3 32 - bit variant
- Mix with 64 bits
- Encode a BenchValue object
- Encodes a key value buffer into a CachedDataBuffer
- Resize the hash array
- Attempt to perform a refresh
- Acquires a lock on the given header
- Gets a key transformation
- Gets the key for the specified key
- Acquires a read lock on the given header version
- Compare the serialized keys
- Decodes a cached value
- Compares the key with the given key and the given serialized key
- Compute the value with the given key
- Gets the next chunk
- Add an entry to the map
- Put a key and value pair
- Performs the compute operation
- Performs a compute operation
- Private int value ;
- Compute the value if present
Oak Key Features
Oak Examples and Code Snippets
Community Discussions
Trending Discussions on Oak
QUESTION
I'm trying to make a GitHub webhook server with Deno, but I cannot find any possible way to do the validation.
This is my current attempt using webhooks-methods.js:
...ANSWER
Answered 2022-Mar-31 at 10:52Your example is very close. The GitHub webhook documentation details the signature header schema. The value is a digest algorithm prefix followed by the signature, in the format of ${ALGO}=${SIGNATURE}:
QUESTION
$user_list = @{
user1 = [ordered]@{
properties = ("666-555-2345", "1234 E Main St", "Dodge Charger");
misc_data = 34145}
user2 = [ordered]@{
properties = ("666-555-1234", "5678 N Elm St", "Plymouth Dart");
misc_data = 46112}
}
function add_new_user($user_name, $info, $misc){
$user_name = [ordered]@{
properties = $info;
misc_data = $misc}
$user_list.add(**"user3"**, $user_name)
}
add_new_user user3 ("666-555-1357", "9876 S Oak Rd", "Chevy PT Cruiser") 33879
$user_list
ANSWER
Answered 2022-Mar-25 at 04:47You can update your hash table from your function like this:
QUESTION
I am very new to SQL and am unable to understand this error: Violation of UNIQUE KEY constraint 'UQ__Flight_L__5DD08D7924EB8625'. Cannot insert duplicate key in object 'dbo.Flight_Leg'. The duplicate key value is (WN380)
...ANSWER
Answered 2022-Mar-23 at 10:05You have a uniqe constraint over Flight, which won't work
QUESTION
...I try to make all the trees after sorting to lowercase but For some reason, I cannot make the lower case to the listTree() work! I know that to lowercase() need to be pasted in a function in order for it to work with the array. But I am not sure how to add to the listTrees() function. Do we need to use if-else statement?
ANSWER
Answered 2022-Mar-10 at 08:43toLowerCase() is only used with strings here you are using toLowerCase() with array. If you want all array items to be in lowercase you need to transform each array items like that:
QUESTION
I have an array, and I want to print them in div tags, and also when I make changes on the array, I want the change also to occur on divs (for example when I delete an item, div print of item also be deleted; or change the value of an item, expect thing happen to the div of the item). I made a little research and I found something I didn't know before that called Proxy object. I wrote the following code:
...ANSWER
Answered 2022-Feb-17 at 12:33Another possible solution could be based on an hand-knitted model and controller logic.
One would entirely separate the pure controller tasks, letting them only work directly with the DOM and with a modeled abstraction of the initially provided list items/values.
The model itself could be e.g. a Map based registry which implements the logic of always being in control of the correct list state.
Thus, in addition to the most obvious register/deregister methods, there will be sanitizing and check tasks that prevent e.g. double registering of (potentially) equal items/values. Such a registry model could also provide getters for special list representations of its registered items like e.g. providing the current array of just each item's text content or an array of each item's model.
As for the latter, such a model in addition to e.g. its id and text value would also feature its own view, e.g. an elm reference of the to be rendered/removed element node.
In order to keep each item specific DOM node and/or each item's model free of controller logic, the main controller task uses event delegation [1],[2] by listening to / handling the double-click event at the list's root-node exclusively.
The next provided example code demonstrates how the main controller task operates both the DOM and the item list abstraction ...
QUESTION
I counted birds on different dates and areas. Some birds got a tracking ID.
That gives my a table with this header. t1:
ANSWER
Answered 2022-Feb-05 at 13:26You should create one more grouping level for the birds without BIRD_TRACKING_ID and use conditional aggregation:
QUESTION
I want to insert data in to a MySQL database table called furesz. What do I need to add to my query so that I can insert M-001 in to the machine column ?
so far I have come with My code :
...ANSWER
Answered 2022-Jan-29 at 14:45If it is a fix value, you can simply add it to the query:
QUESTION
The SML/NJ code below results in a binding not exhaustive warning for "val Grove(whatTree) = glen". The F# equivalent code produces no warning. Why?
Standard ML of New Jersey (32-bit) v110.99.2 [built: Tue Sep 28 13:04:14 2021]:
...ANSWER
Answered 2022-Jan-16 at 13:32This F# code let Grove(whatTree) = glen is ambiguous because it can be interpreted as value binding with deconstruction or function.
In first case syntax is
QUESTION
This is a follow-up of a previous question about using a Python dictionary to generate a list of files to include as input for a single step. In this case, I'm interested in merging BAM files for a single sample that have been generated by mapping FASTQ files from multiple runs.
I am running into an error in my rule combine_bams only for a single sample:
ANSWER
Answered 2022-Jan-04 at 03:10In rule combine_bams, when using lambda expression you will need to provide the values of all {} wildcards. Right now there is only run information provided. One way to fix this is to include kwarg allow_missing=True to expand:
QUESTION
I am trying to run this line of code below to copy the city.output column to pm.city where it is not NA (in my sample dataframe, nothing is NA though) because city.output contains the correct city spellings.
...ANSWER
Answered 2021-Dec-30 at 22:29The city.output is factor which gets coerced to integer storage values. Instead, convert to character with as.character
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install Oak
Support
Reuse Trending Solutions
Find, review, and download reusable Libraries, Code Snippets, Cloud APIs from over 650 million Knowledge Items
Find more librariesStay Updated
Subscribe to our newsletter for trending solutions and developer bootcamps
Share this Page
