[jira] [Updated] (KAFKA-8898) if there is no message for poll, kafka consumer also apply memory

2019-12-27 Thread linking12 (Jira) 


 [ 
https://issues.apache.org/jira/browse/KAFKA-8898?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

linking12 updated KAFKA-8898:
-
Priority: Critical  (was: Blocker)

> if there is no message for poll, kafka consumer also apply memory
> -
>
> Key: KAFKA-8898
> URL: https://issues.apache.org/jira/browse/KAFKA-8898
> Project: Kafka
>  Issue Type: Bug
>  Components: consumer
>Affects Versions: 2.1.1
>Reporter: linking12
>Priority: Critical
>  Labels: performance
> Attachments: image-2019-10-08-12-07-37-328.png
>
>
> when poll message, but there is no record,but consumer will apply 1000 byte 
> memory;
> fetched = *new* HashMap<>() is not good idea, it will apply memory in heap 
> but there is no message;
> I think fetched = *new* HashMap<>() will appear in records exist;
>  
> ```
>   *public* Map>> fetchedRecords() {
>         Map>> fetched = *new* 
> HashMap<>();
>         *int* recordsRemaining = maxPollRecords;
> ```



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[jira] [Updated] (KAFKA-8898) if there is no message for poll, kafka consumer also apply memory

2019-10-07 Thread linking12 (Jira) 


 [ 
https://issues.apache.org/jira/browse/KAFKA-8898?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

linking12 updated KAFKA-8898:
-
Attachment: image-2019-10-08-12-07-37-328.png

> if there is no message for poll, kafka consumer also apply memory
> -
>
> Key: KAFKA-8898
> URL: https://issues.apache.org/jira/browse/KAFKA-8898
> Project: Kafka
>  Issue Type: Bug
>  Components: consumer
>Affects Versions: 2.1.1
>Reporter: linking12
>Priority: Blocker
>  Labels: performance
> Attachments: image-2019-10-08-12-07-37-328.png
>
>
> when poll message, but there is no record,but consumer will apply 1000 byte 
> memory;
> fetched = *new* HashMap<>() is not good idea, it will apply memory in heap 
> but there is no message;
> I think fetched = *new* HashMap<>() will appear in records exist;
>  
> ```
>   *public* Map>> fetchedRecords() {
>         Map>> fetched = *new* 
> HashMap<>();
>         *int* recordsRemaining = maxPollRecords;
> ```



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[jira] [Updated] (KAFKA-8898) if there is no message for poll, kafka consumer also apply memory

2019-09-11 Thread linking12 (Jira) 


 [ 
https://issues.apache.org/jira/browse/KAFKA-8898?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

linking12 updated KAFKA-8898:
-
Summary: if there is no message for poll, kafka consumer also apply memory  
(was: if there is no message for poll, kafka consumer apply memory)

> if there is no message for poll, kafka consumer also apply memory
> -
>
> Key: KAFKA-8898
> URL: https://issues.apache.org/jira/browse/KAFKA-8898
> Project: Kafka
>  Issue Type: Bug
>  Components: consumer
>Affects Versions: 2.1.1
>Reporter: linking12
>Priority: Blocker
>  Labels: performance
>
> when poll message, but there is no record,but consumer will apply 1000 byte 
> memory;
> fetched = *new* HashMap<>() is not good idea, it will apply memory in heap 
> but there is no message;
> I think fetched = *new* HashMap<>() will appear in records exist;
>  
> ```
>   *public* Map>> fetchedRecords() {
>         Map>> fetched = *new* 
> HashMap<>();
>         *int* recordsRemaining = maxPollRecords;
> ```



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