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MultiNodeSelectHandler cause hang #3444

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13611582598 opened this issue Oct 21, 2022 · 2 comments · Fixed by #3461
Closed

MultiNodeSelectHandler cause hang #3444

13611582598 opened this issue Oct 21, 2022 · 2 comments · Fixed by #3461
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@wjl1619
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community issue from community
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3.22.11.0

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dble version： 3.21.10.3 ， 3.21.10.10

dble 心跳异常无法连接后端数据库 ：

  • java.io.IOException: the [dbInstance[x.x.x.x:13316] can't reach. Please check the dbInstance status

dble_jstack.log
@dcy10000 dcy10000 self-assigned this Oct 21, 2022
@PanternBao PanternBao added the community issue from community label Oct 24, 2022
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dcy10000 commented Nov 4, 2022 •
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原因是当下发的分片数大于backendWorker线程数。外加MultiNodeSelectHandler用了阻塞队列，资源相互争抢导致了线程死锁。
线程池的线程全被堵死了没法建立心跳连接

@dcy10000 dcy10000 added this to the 3.22.11.0 milestone Nov 8, 2022
@dcy10000 dcy10000 linked a pull request Nov 30, 2022 that will close this issue
inner-1956:fix MultiNodeSelectHandler hang #3461
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@dcy10000 dcy10000 assigned wjl1619 and unassigned dcy10000 Nov 30, 2022
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wjl1619 commented Jan 6, 2023

verified on version：5.7.21-dble-9.9.9.9-1c1878895bfb85238fe002bf1d013d03b001b062-20221117013530

@wjl1619 wjl1619 closed this as completed Jan 6, 2023
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inner-1956:fix MultiNodeSelectHandler hang actiontech/dble
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@PanternBao @dcy10000 @13611582598 @wjl1619