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https://issues.apache.org/jira/browse/STORM-3364?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16804867#comment-16804867
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maha commented on STORM-3364:
-----------------------------
Hello [~Srdo], Thank you for your answer.
The storm version is : Storm 1.1.0.2.6.4.0-91.
We checked on the different logs, all our tuples are timed (containing a
micro-second time). We can find them when emitted from the Bolt 1 but we were
not be able to find them on the Bolt 2. Then after a period, as explained,
things go back to normal and all the tuple emitted by bolt 1 are received by
bolt 2.
I joined a picture that contains a tuple which is succesfully emited from the
first bolt.However when we search this specific packet in the second bold we
can't find it.
> Data is emitted by the first bolt but it is not recieved by the second and
> Storm indicates neither a data loss nor timeout failure.
> -----------------------------------------------------------------------------------------------------------------------------------
>
> Key: STORM-3364
> URL: https://issues.apache.org/jira/browse/STORM-3364
> Project: Apache Storm
> Issue Type: Bug
> Environment: Big data platform
> Reporter: maha
> Priority: Blocker
>
> Hi Storm community,
> I would like to ask a question about data loss in Storm. My Storm topology
> contains 5 bolts(coded in java):
> The first bolt is a converter that receives the data from the spout and do
> some preliminary transformations(coded also on java), then the second bolt
> receives the emitted converter data, calls a Python script and runs it. In
> this Python code, we added a new function that creates new fields from the
> field received from the first bolt.
> When I submit the topology, +tuples are emitted without any problem from the
> first bolt+ to the second but +some tuples are not received by the second
> bolt+, without any failed information. {color:#205081}*After some time(15-20
> min) it works perfectly*{color}.
> The first bolt log is emitting the values but those values are not received
> by the second bolt (nothing on the logs) without ANY error or any failed ACK.
> *Question:* _*{color:#ff0000}I would like to know why it doesn't work for a
> certain period when we submit the topology (directly) and after a period of
> time those information start being received on the second bolt, all the data
> needed is emitted from the first bolt but I can't find it in the second
> one.{color}*
> The timeout for failed ACK on Storm is 30 sec, Storm indicates neither a data
> loss nor timeout failure.
> Thank you, I will be glad to hear from you.
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