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https://issues.apache.org/jira/browse/IOTDB-1266?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17312206#comment-17312206
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Tian Jiang commented on IOTDB-1266:
-----------------------------------
The case where offset equals zero is simple enough and you can see we did not
change limit or offset when the offset is 0. But when it is not 0, things
become rather complicated. If the user wants to skip the first 10 results, how
does a coordinator know where the first 10 results are? So it cannot let any
queried node do the skip, since it may skip the desired records.
> SHOW TIMESERIES will only display 2000 timeseries
> -------------------------------------------------
>
> Key: IOTDB-1266
> URL: https://issues.apache.org/jira/browse/IOTDB-1266
> Project: Apache IoTDB
> Issue Type: Improvement
> Components: Cluster
> Reporter: Yifu Zhou
> Assignee: Yifu Zhou
> Priority: Major
> Fix For: 0.12.0
>
>
> The BUG is in the applyShowTimeseriesLimitOffset method. If there are 10000
> timeseries data, when first time go in this method, and the default limit is
> 1000, offset is 0, showTimeSeriesResults will only return 1000 timeseries.
> For the reason that 10000 > 1000(limit+offset), so it will do the second
> iteration. And now offset is set to 1000. Once the offset != 0, it will do
> plan.setOffset(0) and plan.setLimit(0). So for the second iteration, after
> return 1000 timeseries from showTimeSeriesResults, it will end.
> In my opinion, it is useless for the applyShowTimeseriesLimitOffset method...
> If the default limit is 1000, it means that if we have 10000 timeseries, we
> have to do 10 times iterations, and each iteration we need to fetch the
> timeseries data from all the servers.
> I think there are two ways, one is to keep this
> applyShowTimeseriesLimitOffset method and fix the plan.setOffset(0)(I am
> confused what why we have to set it 0), the other is remove
> applyShowTimeseriesLimitOffset because I think it is useless...
> Any idea here?
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