Hi All,
I wanted to try out Kylin 3.1.3 with a clean installation but ran into an
issue. The stream receiver is unable to start due to the following error:
2021-12-30 18:20:07,474 ERROR [main] server.StreamingReceiver:53 :
streaming receiver start fail
org.apache.kylin.stream.coordinator.exception.StoreException:
com.fasterxml.jackson.core.JsonParseException: Unexpected character ('.'
(code 46)): Expected space separating root-level values
at [Source: (byte[])"24.0.1.128"; line: 1, column: 6]
at
org.apache.kylin.stream.coordinator.ZookeeperStreamMetadataStore.getCoordinatorNode(ZookeeperStreamMetadataStore.java:276)
at
org.apache.kylin.stream.coordinator.client.HttpCoordinatorClient.<init>(HttpCoordinatorClient.java:53)
at
org.apache.kylin.stream.server.StreamingServer.<init>(StreamingServer.java:126)
at
org.apache.kylin.stream.server.StreamingServer.getInstance(StreamingServer.java:141)
at
org.apache.kylin.stream.server.StreamingReceiver.startStreamingServer(StreamingReceiver.java:67)
at
org.apache.kylin.stream.server.StreamingReceiver.start(StreamingReceiver.java:61)
at
org.apache.kylin.stream.server.StreamingReceiver.main(StreamingReceiver.java:51)
Caused by: com.fasterxml.jackson.core.JsonParseException: Unexpected
character ('.' (code 46)): Expected space separating root-level values
at [Source: (byte[])"24.0.1.128"; line: 1, column: 6]
at
com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:1840)
at
com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:712)
at
com.fasterxml.jackson.core.base.ParserMinimalBase._reportUnexpectedChar(ParserMinimalBase.java:637)
at
com.fasterxml.jackson.core.base.ParserMinimalBase._reportMissingRootWS(ParserMinimalBase.java:684)
at
com.fasterxml.jackson.core.json.UTF8StreamJsonParser._verifyRootSpace(UTF8StreamJsonParser.java:1659)
at
com.fasterxml.jackson.core.json.UTF8StreamJsonParser._parseFloat(UTF8StreamJsonParser.java:1626)
at
com.fasterxml.jackson.core.json.UTF8StreamJsonParser._parsePosNumber(UTF8StreamJsonParser.java:1393)
at
com.fasterxml.jackson.core.json.UTF8StreamJsonParser._nextTokenNotInObject(UTF8StreamJsonParser.java:854)
at
com.fasterxml.jackson.core.json.UTF8StreamJsonParser.nextToken(UTF8StreamJsonParser.java:753)
at
com.fasterxml.jackson.databind.ObjectMapper._initForReading(ObjectMapper.java:4340)
at
com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4189)
at
com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3266)
at org.apache.kylin.common.util.JsonUtil.readValue(JsonUtil.java:76)
at
org.apache.kylin.stream.coordinator.ZookeeperStreamMetadataStore.getCoordinatorNode(ZookeeperStreamMetadataStore.java:272)
... 6 more
I did check in ZooKeeper and indeed the path is containing the plain string
of the IP address instead of a valid JSON Node object that is present in ZK
in our 3.1.0 installation:
[hadoop@ip-24-0-1-128 kylin_stream]$ hbase zkcli
Connecting to ip-24-0-1-124.us-west-2.compute.internal:2181
Welcome to ZooKeeper!
JLine support is disabled
WATCHER::
WatchedEvent state:SyncConnected type:None path:null
get /kylin/kylin_metadata/stream/coordinator
24.0.1.128
cZxid = 0x77
ctime = Thu Dec 30 18:18:27 UTC 2021
mZxid = 0x77
mtime = Thu Dec 30 18:18:27 UTC 2021
pZxid = 0x77
cversion = 0
dataVersion = 0
aclVersion = 0
ephemeralOwner = 0x0
dataLength = 10
numChildren = 0
Do you have any idea what could be the issue?
Regards,
Gabor
