jaa | Actionable memory analysis for JVM languages
kandi X-RAY | jaa Summary
kandi X-RAY | jaa Summary
JVM allocation analysis that filters out allocations HotSpot optimizes out. This gives you allocation reports that are actionable, meaning if you address the top allocations in the report, you'll make a good dent in actual production heap usage.
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Top functions reviewed by kandi - BETA
- Entry point for testing
- Get the list of allocations
- Sorts all bytes by byte
- Sample allocation
- Fills the stack trace based on the stack trace
- Add a record to the stack trace
- Print a detailed stack trace
- Starts the control loop
- Sends control server
- Run the elimination algorithm
- Downloads the debug data from the given URL to the given path
- Compares this allocation to another
- Read allocation ledger from the command line
- Allocates the allocation analysis
- Starts the allocation server
- Capture standard streams
jaa Key Features
jaa Examples and Code Snippets
Lines of Code : 20License : Strong Copyleft (GPL-3.0)
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com.jakewins
jaa
1.1.0
public class SimpleExample {
public static void main(String ... argv) throws IOException {
new Jaa(new Options.Builder()
.include(SimpleExample.class)
.withReportFolder(Path Community Discussions
Trending Discussions on jaa
QUESTION
I am trying to use kafka rest proxy for AWS MSK cluster.
MSK Encryption details:
Within the cluster
TLS encryption: Enabled
Between clients and brokers
TLS encryption: Enabled
Plaintext: Not enabled
I have created topic "TestTopic" on MSK and then I have created another EC2 instance in the same VPC as MSK to work as Rest proxy. Here are details from kafka-rest.properties:
...ANSWER
Answered 2021-Jun-13 at 10:23Finally the issue was fixed. I am updating the fix here so that it can be beneficial for someone:
kafka-rest.properties file should have below text:
QUESTION
I have Zookeeper and Apache Kafka servers running on my Windows computer. The problem is with a Spring Boot application: it reads the same messages from Kafka whenever I start it. It means the offset is not being saved. How do I fix it?
Versions are: kafka_2.12-2.4.0, Spring Boot 2.5.0.
In Kafka listener bean, I have
...ANSWER
Answered 2021-Jun-10 at 15:19Your issue is here enable.auto.commit = false. If you are not manually committing offset after consuming messages, You should configure this to true
If this is set to false, after consuming messages from Kafka, there is no feedback to Kafka whether you read or not. Then after you restart your consumer it will send messages from the start. If you enable this, your consumer make sure it will automatically send your last read offset to Kafka. Then Kafka saved that offset in __consumer_offsets topic with your consumer group_id, topic you consumed and partition.
Then after you restart the consumer, Kafka read your last position from __consumer_offsets topic and send from there.
QUESTION
I'm following similar example as in this blog post:
https://rmoff.net/2019/11/12/running-dockerised-kafka-connect-worker-on-gcp/
Except that I'm not running kafka connect worker on GCP but locally.
Everything is fine I run the docker-compose up and kafka connect starts but when I try to create instance of source connector via CURL I get the following ambiguous message (Note: there is literally no log being outputed in the kafka connect logs):
...ANSWER
Answered 2021-Jun-11 at 14:27I managed to get it to work, this is a correct configuration...
The message "Unable to connect to the server" was because I had wrongly deployed mongo instance so it's not related to kafka-connect or confluent cloud.
I'm going to leave this question as an example if somebody struggles with this in the future. It took me a while to figure out how to configure docker-compose for kafka-connect that connects to confluent cloud.
QUESTION
I'm using Tomcat 10 and eclipse to develop a J2E (or Jakarta EE) web application. I followed this tutorial (http://objis.com/tutoriel-securite-declarative-jee-avec-jaas/#partie2) which seems old (it's a french document, because i'm french, sorry if my english isn't perfect), but I also read the Tomcat 10 documentation.
The dataSource works, I followed instructions on this page (https://tomcat.apache.org/tomcat-10.0-doc/jndi-datasource-examples-howto.html#Oracle_8i,_9i_&_10g) and tested it, but it seems that the realm doesn't work, because I can't login successfully. I always have an authentification error, even if I use the right login and password.
I tried a lot of "solutions" to correct this, but no one works. And I still don't know if I have to put the realm tag inside context.xml, server.xml or both. I tried context.xml and both, but i don't see any difference.
My web.xml :
ANSWER
Answered 2021-Jun-10 at 13:44As Piotr P. Karwasz said it, I misspelled dataSourceName in context.xml and server.xml file. I feel bad that I didn't notice it.
But I still have one question : In which document should I put the realm tag ?
QUESTION
When I run ActiveMQ Artemis in docker I see this basically empty screen:
That doesn't look right... I was expecting this, like I get when using the zip file:
Regardless of whether I use docker or the zip file, it doesn't matter what username or password I enter, I just get logged in regardless, which is a little concerning...
What am I doing wrong?
Longer VersionI'm attempting a "Hello World" style installation of ActiveMQ. It sounds like ActiveMQ Artemis is what I should be using. We'll be using this on Kubernetes, so I found and have followed https://artemiscloud.io/. There is a Quickly deploy a basic Container image that runs the broker right there on the front page. It suggests:
...ANSWER
Answered 2021-May-28 at 14:35The ArtemisCloud container image for ActiveMQ Artemis is designed to run inside a container so the container IP address should be used to access to the console or to other resources.
The container IP address can be obtained by using the command docker inspect or by reading the container log, ie:
QUESTION
First, I made a test project to learn how to work with ActiveMQ. Everything worked there.
But when I did the same with an already made application on Spring + security + JAAS then everything stopped working, and apparently the JmsListener class is not working. I sent messages to this queue via ActiveMQ admin but didn't work.
ANSWER
Answered 2021-May-20 at 14:55The problem ist this line
QUESTION
I am using a kafka environment via docker. It went up correctly!
But I can't perform REST queries with my python script...
I am trying to read all messages received on the streamer!
Any suggestions for correction?
Sorry for the longs outputs, I wanted to detail the problem to facilitate debugging :)
consumer.py
...ANSWER
Answered 2021-May-18 at 04:40just use kafka-python package.
QUESTION
I'm trying to run a simple message producer that leverages SSL security to connect with Confluent platform. I am using the KafkaTemplate from Spring Kafka for sending the message. However, at the time I call kafkaTemplate.send(), I receive the following message:
ANSWER
Answered 2021-May-13 at 13:32Based on the research I've done and the help provided here, I've been able to determine the problem is one of compatibility. The Confluent 5.5.1 libraries are incompatible with Spring Boot 2.4.x, because the kafka-clients 2.6.0 that is compatible with Spring Boot 2.4.x is not compatible with that version of Confluent.
QUESTION
Summarizing my environment:
- Running Rundeck (3.3.11) at Kuberenetes Cluster
- Dedicated Database MariaDB connected via JDBC Connector.
- Configured Active Directory via JAAS using the variables
RUNDECK_JAAS_LDAP_ *and auth working, I can logon using my AD user. - Configured ACL Policy template using K8s Secret like in this Zoo sample:
ANSWER
Answered 2021-May-10 at 19:58Guys I found the trouble!
It was missing to add some variables RUNDECK_JAAS_LDAP_ROLEMEMBERATTRIBUTE and RUNDECK_JAAS_LDAP_ROLEOBJECTCLASS, by default if you don't declare that, Rundeck assume another values.
After I apply this vars and re-deploy my Rundeck Pod back works my access using my AD Account.
To help the community I'm making available the list of vars that I used in my deployment:
QUESTION
Could anyone provide me an example for generating jwt tokens with three headers given as (alg, kid, typ) that has the format:
...ANSWER
Answered 2021-May-08 at 12:19All the instructions are written on this page, https://jwt.io/introduction.
For simplicity, I did not implement HMACSHA256 or use a library to do it. You need to implement this function.
- If you want to do it from the browser which doesnt make much sense, How to get HMAC with Crypto Web API.
- If you want to do it from node (backend), which makes more sense, you can look at this https://www.nodejsera.com/snippets/nodejs/sha256-hmac.html.
I also think that your header is invalid according to spec. This kid property should probably go into the payload.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install jaa
You can use jaa like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the jaa component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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