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[BUG] tispark任务启动延迟 #2230

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zzppingcap opened this issue Feb 7, 2022 · 4 comments
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[BUG] tispark任务启动延迟 #2230

zzppingcap opened this issue Feb 7, 2022 · 4 comments
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@zzppingcap
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zzppingcap commented Feb 7, 2022 •
edited by sunxiaoguang
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Describe the bug
5.1.1集群tispark任务启动延迟，延迟几十秒或两三分钟启动，在3.0集群上没这个现象。
@shiyuhang0
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/lifecycle frozen

@xuanyu66
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#2331

@xuanyu66
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#959

@qidi1 qidi1 mentioned this issue Aug 24, 2022
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@qidi1
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qidi1 commented Aug 29, 2022 •
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This phenomenon is induced by two reasons. First, in the case of high concurrency, the locks on the regionCache are locked for a long time due to competition. Second, the original regionCache has a low hit rate, which causes a large number of rpc requests. These two problems have been solved by #2106 and #1987.
In version 2.5 and later, the problem no longer exists.

@xuanyu66 xuanyu66 closed this as completed Nov 3, 2022
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Enhance TiSpark start up task speed when there are a large amount of regions qidi1/tispark
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@xuanyu66 @qidi1 @shiyuhang0 @ti-chi-bot @zzppingcap