Question

我的3节点Cassandra集群通过AWS弹性负载平衡（ELB）部署在AWS上

当我运行以下命令时：

$cqlsh -u <userid> -p <pwd>  <ELB's ip> -f backup.cqlsh

并在backup.cqlsh中：

COPY comm_hub.my_table TO 'my_table.csv' WITH PAGESIZE=10;

但是在导出大约200行之后，我得到了

backup.cqlsh:1:
Error for (-429560303281209914, -419692349690315328):
Failed to connect to all replicas ['10.16.234.41', '10.16.233.40', '10.16.234.130'] for (-429560303281209914, -419692349690315328), errors:
['NoHostAvailable - (\'Unable to connect to any servers\', {\'10.16.234.41\': error(None, "Tried connecting to [(\'10.16.234.41\', 9042)]. Last error: timed out")})', 'NoHostAvailable - (\'Unable to connect to any servers\', {\'10.16.233.40\': error(None, "Tried connecting to [(\'10.16.233.40\', 9042)]. Last error: timed out")})', 'NoHostAvailable - (\'Unable to connect to any servers\', {\'10.16.234.130\': error(None, "Tried connecting to [(\'10.16.234.130\', 9042)]. Last error: timed out")})'] (will try again later attempt 1 of 5)

我想念什么？

Answer 1

我在本地群集中遇到了同样的问题，并通过设置NUMPROCESSES = 1来解决。

在您提供的示例中：COPY comm_hub.my_table TO 'my_table.csv' WITH PAGESIZE=10 AND NUMPROCESSES=1;

使用cqlsh的COPY时无法连接到所有副本

1 个答案: