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garbage-collectionapache-storm
paalaak
paalaak

Reputation: 183

Garbage Collection in Apache Storm

Which is the default garbage collector in Storm and why?

Can someone please explain what happens to tuples in memory after they are acknowledged by a Bolt?

Upvotes: 3

Views: 1012

Answers (1)

Chiron
Chiron

Reputation: 20245

Since Apache Storm is a JVM based project, then when it comes to garbage collection, the garbage collection policy used by Storm JVM process will be used.

I might be wrong but it looks to me that you are mixing two things here, JVM GC and Storm Acknowledge process.

Here is how acknowledge in Apache Storm was created:

Apache Storm spouts keep the messages (events) in their output queues until they are being acknowledged. The acknowledgement occurs only after the successful processing of a message (event) by the topology. If an acknowledgement comes for a message (event) within a reasonable amount of time, then the spouts clear the message from their output queue. If an acknowledgement didn’t come within a predefined period (30 second default), then the spouts replay the message again through the topology.

Should be read: Guaranteeing Message Processing.

Upvotes: 0

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