VGalaxies commented on issue #2228:
URL:
https://github.com/apache/incubator-hugegraph/issues/2228#issuecomment-1580213669
@liuxiaocs7
Direct interactive input works for me too:
```java
\,,,/
(o o)
-----oOOo-(3)-oOOo-----
plugin activated: HugeGraph
plugin activated: tinkerpop.server
plugin activated: tinkerpop.utilities
plugin activated: tinkerpop.tinkergraph
ERROR StatusLogger Reconfiguration failed: No configuration found for
'18b4aac2' at 'null' in 'null'
main dict load finished, time elapsed 593 ms
model load finished, time elapsed 50 ms.
Error in scripts/example.groovy at [42:
schema.indexLabel("personByCity").onV("person").by("city").secondary().ifNotExist().create()]
- Failed to update/query TaskStore: java.util.concurrent.ExecutionException:
org.apache.hugegraph.HugeException: Schema is missing for task(1)
'INDEX_LABEL:1:personByCity'
gremlin>
schema.indexLabel("personByCity").onV("person").by("city").secondary().ifNotExist().create()
==>personByCity(id=1)
```
I analyzed the reason for `Schema is missing for task` and found that it was
actually because a VertexLabel named **`~task`** does not exist. When I running
HugeGraphServer using IDEA, VertexLabel `~task` was created by [this
function](https://github.com/apache/hugegraph/blob/bcf2a395cf8949c39a127facb404f75cf3842475/hugegraph-core/src/main/java/org/apache/hugegraph/task/StandardTaskScheduler.java#L776).
So I traced the call chain and added the following function call in the
groovy script:
```groovy
conf = "conf/graphs/hugegraph.properties"
graph = HugeFactory.open(conf)
graph.initBackend() // to create VertexLabel `~task`
System.out.println(graph.existsVertexLabel("~task"))
```
After that, I run `./bin/gremlin-console.sh scripts/example.groovy` again,
and it showed:
```java
\,,,/
(o o)
-----oOOo-(3)-oOOo-----
plugin activated: HugeGraph
plugin activated: tinkerpop.server
plugin activated: tinkerpop.utilities
plugin activated: tinkerpop.tinkergraph
ERROR StatusLogger Reconfiguration failed: No configuration found for
'18b4aac2' at 'null' in 'null'
main dict load finished, time elapsed 625 ms
model load finished, time elapsed 40 ms.
true
Error in scripts/example.groovy at [42:
schema.indexLabel("personByCity").onV("person").by("city").secondary().ifNotExist().create()]
- Failed to wait for task '1' completed
gremlin>
```
Something went wrong when [async rebuild
index](https://github.com/apache/hugegraph/blob/bcf2a395cf8949c39a127facb404f75cf3842475/hugegraph-core/src/main/java/org/apache/hugegraph/schema/builder/IndexLabelBuilder.java#L235).
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