Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

some problem on flink batch sql about insert operation #3

Open
queyuexzy opened this issue Dec 29, 2020 · 0 comments
Open

some problem on flink batch sql about insert operation #3

queyuexzy opened this issue Dec 29, 2020 · 0 comments

Comments

@queyuexzy
Copy link

hi,最近在写flink 的batch sql,在写的时候遇到了一个问题:
flink 版本:1.10.1
ExecutionEnvironment env = ExecutionEnvironment.getExecutionEnvironment();
BatchTableEnvironment tEnv = BatchTableEnvironment.create(env);
tEnv.registerFunction("explode", new ExplodeFunction());
Table orders = tEnv.from("zhangying480_test");
HiveCatalog catalog = new HiveCatalog("myhive", "test", "", HiveVersionInfo.getVersion());
tEnv.registerCatalog("myhive", catalog);
tEnv.useCatalog("myhive");
Table counts = orders
.groupBy("related_info")
.select("explode(related_info)");
counts.insertInto("zhangying4802_test");
tEnv.execute("test");

如果直接这么执行,会报错如下:
Exception in thread "main" org.apache.flink.table.api.TableException: Only BatchTableSource and InputFormatTableSource are supported in BatchTableEnvironment.
at org.apache.flink.table.plan.nodes.dataset.BatchTableSourceScan.translateToPlan(BatchTableSourceScan.scala:118)
at org.apache.flink.table.plan.nodes.dataset.DataSetDistinct.translateToPlan(DataSetDistinct.scala:84)
at org.apache.flink.table.plan.nodes.dataset.DataSetCalc.translateToPlan(DataSetCalc.scala:92)
at org.apache.flink.table.api.internal.BatchTableEnvImpl.translate(BatchTableEnvImpl.scala:306)
at org.apache.flink.table.api.internal.BatchTableEnvImpl.translate(BatchTableEnvImpl.scala:281)
at org.apache.flink.table.api.internal.BatchTableEnvImpl.writeToSink(BatchTableEnvImpl.scala:145)
at org.apache.flink.table.api.internal.TableEnvImpl.insertInto(TableEnvImpl.scala:664)
at org.apache.flink.table.api.internal.TableEnvImpl.insertInto(TableEnvImpl.scala:604)
at org.apache.flink.table.api.internal.TableImpl.insertInto(TableImpl.java:411)
at com.jd.search.algo.invoke.LocalHiveTest.main(LocalHiveTest.java:99)

因此,我用如下代码跑:
EnvironmentSettings settings = EnvironmentSettings.newInstance().useBlinkPlanner().inBatchMode().build();
TableEnvironment tEnv = TableEnvironment.create(settings);
tEnv.registerFunction("explode", new ExplodeFunction());
Table orders = tEnv.from("zhangying480_test");
HiveCatalog catalog = new HiveCatalog("myhive", "test", "", HiveVersionInfo.getVersion());
tEnv.registerCatalog("myhive", catalog);
tEnv.useCatalog("myhive");
Table counts = orders
.groupBy("related_info")
.select("explode(related_info)");
counts.insertInto("zhangying4802_test");
tEnv.execute("test");
但是这么写的话,tEnv.registerFunction("explode", new ExplodeFunction()); 这行代码报错,查看源码,发现是因为TableEnvironment 只支持ScalarFunction,但是ExplodeFunction继承的是TableFunction。

我们的业务需求是需要使用TableFunction,但是感觉这个问题好像无解了。因为我们使用的是平台的flink 集群,他们的升级比较困难,请问可以在不生版本的同时解决这个问题吗?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

No branches or pull requests

1 participant