apache-pinot #troubleshooting

I am doing a PoC, Till now I used quick_start_stream code. And did some work on that. But when I stop the Pinot, everything tables, schema and data is gone. How to make it all data should be in local permanently. And when I restart the pinot, how can I see tables, schema and data. Need your help

troywinter

04/26/2021, 3:01 PM

I’m getting

Caught exception while transforming the record:

when ingesting realtime stream, it’s a

java.lang.ClassCastException: null

exception, looks like it’s casting a null value to some type, is this a bug?

Mohamed Sultan

04/27/2021, 11:03 AM

Hi team. I'm facing some issue when i tried to connect with GCS deep store Here are the logs. Please take a look and help me on this.

Vengatesh Babu

04/27/2021, 2:10 PM

Hello guys, Data Ingestion not working for data with JSON data types. Followed the below steps in StackOverflow.

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<https://stackoverflow.com/questions/65886253/pinot-nested-json-ingestion>

Even examples given for JSON data types in build also not working (githubEvents) https://github.com/apache/incubator-pinot/tree/master/pinot-tools/src/main/resources/examples/batch/githubEvents Schema file:

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{
  "metricFieldSpecs": [],
  "dimensionFieldSpecs": [
    {
      "dataType": "STRING",
      "name": "name"
    },
    {
      "dataType": "LONG",
      "name": "age"
    },
    {
      "dataType": "STRING",
      "name": "subjects_str"
    },
    {
      "dataType": "STRING",
      "name": "subjects_name",
      "singleValueField": false
    },
    {
      "dataType": "STRING",
      "name": "subjects_grade",
      "singleValueField": false
    }
  ],
  "dateTimeFieldSpecs": [],
  "schemaName": "myTable"
}

Table Config:

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{
    "tableName": "myTable",
    "tableType": "OFFLINE",
    "segmentsConfig": {
        "segmentPushType": "APPEND",
        "segmentAssignmentStrategy": "BalanceNumSegmentAssignmentStrategy",
        "schemaName": "myTable",
        "replication": "1"
    },
    "tenants": {},
    "tableIndexConfig": {
        "loadMode": "MMAP",
        "invertedIndexColumns": [],
        "noDictionaryColumns": [
            "subjects_str"
        ],
        "jsonIndexColumns": [
            "subjects_str"
        ]
    },
    "metadata": {
        "customConfigs": {}
    },
    "ingestionConfig": {
        "batchIngestionConfig": {
            "segmentIngestionType": "APPEND",
            "segmentIngestionFrequency": "DAILY",
            "batchConfigMaps": [],
            "segmentNameSpec": {},
            "pushSpec": {}
        },
        "transformConfigs": [
            {
                "columnName": "subjects_str",
                "transformFunction": "jsonFormat(subjects)"
            },
            {
                "columnName": "subjects_name",
                "transformFunction": "jsonPathArray(subjects, '$.[*].name')"
            },
            {
                "columnName": "subjects_grade",
                "transformFunction": "jsonPathArray(subjects, '$.[*].grade')"
            }
        ]
    }
}

Data.json

{"name":"Pete","age":24,"subjects":[{"name":"maths","grade":"A"},{"name":"maths","grade":"B--"}]}
{"name":"Pete1","age":23,"subjects":[{"name":"maths","grade":"A+"},{"name":"maths","grade":"B--"}]}
{"name":"Pete2","age":25,"subjects":[{"name":"maths","grade":"A++"},{"name":"maths","grade":"B--"}]}
{"name":"Pete3","age":26,"subjects":[{"name":"maths","grade":"A+++"},{"name":"maths","grade":"B--"}]}

please help me to rectify this issue. Ingestion Job output: (No error)

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bin/pinot-admin.sh LaunchDataIngestionJob -jobSpecFile /home/sas/apache-pinot-incubating-0.7.1-bin/examples/batch/jsontype/ingestionJobSpec.yaml 
SegmentGenerationJobSpec: 
!!org.apache.pinot.spi.ingestion.batch.spec.SegmentGenerationJobSpec
cleanUpOutputDir: false
excludeFileNamePattern: null
executionFrameworkSpec: {extraConfigs: null, name: standalone, segmentGenerationJobRunnerClassName: org.apache.pinot.plugin.ingestion.batch.standalone.SegmentGenerationJobRunner,
  segmentMetadataPushJobRunnerClassName: null, segmentTarPushJobRunnerClassName: org.apache.pinot.plugin.ingestion.batch.standalone.SegmentTarPushJobRunner,
  segmentUriPushJobRunnerClassName: org.apache.pinot.plugin.ingestion.batch.standalone.SegmentUriPushJobRunner}
includeFileNamePattern: glob:**/*.json
inputDirURI: examples/batch/jsontype/rawdata
jobType: SegmentCreationAndTarPush
outputDirURI: examples/batch/jsontype/segments
overwriteOutput: true
pinotClusterSpecs:
- {controllerURI: '<http://localhost:9000>'}
pinotFSSpecs:
- {className: org.apache.pinot.spi.filesystem.LocalPinotFS, configs: null, scheme: file}
pushJobSpec: {pushAttempts: 2, pushParallelism: 1, pushRetryIntervalMillis: 1000,
  segmentUriPrefix: null, segmentUriSuffix: null}
recordReaderSpec: {className: org.apache.pinot.plugin.inputformat.json.JSONRecordReader,
  configClassName: null, configs: null, dataFormat: json}
segmentCreationJobParallelism: 0
segmentNameGeneratorSpec: null
tableSpec: {schemaURI: '<http://localhost:9000/tables/myTable/schema>', tableConfigURI: '<http://localhost:9000/tables/myTable>',
  tableName: myTable}
tlsSpec: null

Trying to create instance for class org.apache.pinot.plugin.ingestion.batch.standalone.SegmentGenerationJobRunner
Creating an executor service with 1 threads(Job parallelism: 0, available cores: 40.)
Initializing PinotFS for scheme file, classname org.apache.pinot.spi.filesystem.LocalPinotFS
Submitting one Segment Generation Task for file:/home/sas/apache-pinot-incubating-0.7.1-bin/examples/batch/jsontype/rawdata/test.json
Initialized FunctionRegistry with 119 functions: [fromepochminutesbucket, arrayunionint, codepoint, mod, sha256, year, yearofweek, upper, arraycontainsstring, arraydistinctstring, bytestohex, tojsonmapstr, trim, timezoneminute, sqrt, togeometry, normalize, fromepochdays, arraydistinctint, exp, jsonpathlong, yow, toepochhoursrounded, lower, toutf8, concat, ceil, todatetime, jsonpathstring, substr, dayofyear, contains, jsonpatharray, arrayindexofint, fromepochhoursbucket, arrayindexofstring, minus, arrayunionstring, toepochhours, toepochdaysrounded, millisecond, fromepochhours, arrayreversestring, dow, doy, min, toepochsecondsrounded, strpos, jsonpath, tosphericalgeography, fromepochsecondsbucket, max, reverse, hammingdistance, stpoint, abs, timezonehour, toepochseconds, arrayconcatint, quarter, md5, ln, toepochminutes, arraysortstring, replace, strrpos, jsonpathdouble, stastext, second, arraysortint, split, fromepochdaysbucket, lpad, day, toepochminutesrounded, fromdatetime, fromepochseconds, arrayconcatstring, base64encode, ltrim, arraysliceint, chr, sha, plus, base64decode, month, arraycontainsint, toepochminutesbucket, startswith, week, jsonformat, sha512, arrayslicestring, fromepochminutes, remove, dayofmonth, times, hour, rpad, arrayremovestring, now, divide, bigdecimaltobytes, floor, toepochsecondsbucket, toepochdaysbucket, hextobytes, rtrim, length, toepochhoursbucket, bytestobigdecimal, toepochdays, arrayreverseint, datetrunc, minute, round, dayofweek, arrayremoveint, weekofyear] in 942ms
Using class: org.apache.pinot.plugin.inputformat.json.JSONRecordReader to read segment, ignoring configured file format: AVRO
Finished building StatsCollector!
Collected stats for 4 documents
Using fixed length dictionary for column: subjects_grade, size: 20
Created dictionary for STRING column: subjects_grade with cardinality: 5, max length in bytes: 4, range: A to B--
Using fixed length dictionary for column: subjects_name, size: 5
Created dictionary for STRING column: subjects_name with cardinality: 1, max length in bytes: 5, range: maths to maths
Using fixed length dictionary for column: name, size: 20
Created dictionary for STRING column: name with cardinality: 4, max length in bytes: 5, range: Pete to Pete3
Created dictionary for LONG column: age with cardinality: 4, range: 23 to 26
Start building IndexCreator!
Finished records indexing in IndexCreator!
Trying to create instance for class org.apache.pinot.plugin.ingestion.batch.standalone.SegmentTarPushJobRunner
Initializing PinotFS for scheme file, classname org.apache.pinot.spi.filesystem.LocalPinotFS
Start pushing segments: []... to locations: [org.apache.pinot.spi.ingestion.batch.spec.PinotClusterSpec@4e31276e] for table myTable

Mayank

04/27/2021, 3:28 PM

The log seems to indicate that segment was created. Perhaps it is segment push that has an issue Can you check output dir to see if there are segments there?

Jay Desai

04/27/2021, 9:37 PM

Had a question regarding “Checks” that run automatically when we raise a PR against the

apache:master

branch. I raised a PR a couple of days back and the “Checks” are not running for me. Do I need to enable some settings ? PR Reference : https://github.com/apache/incubator-pinot/pull/6842

Phúc Huỳnh

04/28/2021, 2:54 AM

what’s difference between

segmentUriPush

and

segmentMetadataPush

Alon Burg

04/28/2021, 8:34 AM

hi all I’m trying to run pinot thirdeye quickstart and encountering an error

Unrecognized field at: whitelistDatasets

Opened an issue Would love to submit a PR … not sure where to start

Mohamed Sultan

04/28/2021, 8:49 AM

I'm just curious to know the issue that after adding the gcs deep store configs in server and controller. The controller external ip (pinot dashboard) says refused to connect. so, I just removed all the gcs deep store config then upgraded the helm chart. It was back to the normal and can able to hit the pinot dashboard. I have pasted the configs gcs configs. Point me if i added something wrong.

Alon Burg

04/28/2021, 12:30 PM

i’m encountering a problem with running

docker container exec -it pinot-quickstart bin/generator.sh complexWebsite

pinot just exits, without any error in the log. Trying to follow ThirdEye quickstart

Syed Akram

04/29/2021, 8:50 AM

Any update on this?

Pedro Silva

04/30/2021, 4:53 PM

Hello, I'm encountering a problem where Pinot is not consuming kafka events for a realtime table after defining it. What are some quick places to look at, to understand what might be causing this?

Mayank

05/02/2021, 4:15 PM

@kauts shukla Moving to troubleshooting: https://apache-pinot.slack.com/archives/CDRCA57FC/p1619953930084100

Pedro Silva

05/03/2021, 5:15 PM

Hello, has anyone succesfully configured pinot to use Azure Storage Containers for deep storage?

Akash

05/05/2021, 10:25 PM

I am not sure, if i have to add hadoop jar’s again in the Spark classpath.

Jay Desai

05/05/2021, 10:31 PM

@Xiang Fu Can u approve the workflow trigger for PR: https://github.com/apache/incubator-pinot/pull/6842 Thanks 🙂

Pedro Silva

05/06/2021, 2:42 PM

When creating a table definition in the UI (using v0.7.1) I'm getting an http error 500 to the /tables POST endpoint with the following message:

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code: 500
error: "org.apache.pinot.plugin.stream.kafka20.KafkaConsumerFactory"

Does anyone know what this means?

ayush sharma

05/06/2021, 5:07 PM

Hi all, We want to assign storageClass to pinot zookeeper in the helm chart so that whenever a pinot-zookeeper pod gets created it automatically claims a PV. But I see, there is no direct way to assign using values.yaml We tried installing incubator/zookeeper using the below command

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helm -n my-pinot-kube install pinot-zookeeper incubator/zookeeper --set replicaCount=1

and disabled the zookeeper in helm/pinot/values.yaml by modifying zookeeper.enabled to false. But we see face an error from

_helpers.tpl

indicating not able to fetch the

zookeeper.url

and related to

configurationOverride

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Error: template: pinot/templates/server/statefulset.yml:63:27: executing "pinot/templates/server/statefulset.yml" at <include "zookeeper.url" .>: error calling include: template: pinot/templates/_helpers.tpl:79:33: executing "zookeeper.url" at <index .Values "configurationOverrides" "zookeeper.connect">: error calling index: index of nil pointer

Any help is appreciated !

Arun Vasudevan

05/06/2021, 10:00 PM

Hi…When trying to

Upload the schema and Table Config

- https://docs.pinot.apache.org/basics/getting-started/pushing-your-streaming-data-to-pinot#uploading-your-schema-and-table-config I am getting the following error…

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Sending request: <http://pinot-quickstart:9000/schemas> to controller: ea8d7bfc16ea, version: Unknown
{"code":500,"error":"org.apache.kafka.common.errors.TimeoutException: Timeout expired while fetching topic metadata"}

However I am able to login to my kafka docker and describe and that works fine…

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bash-4.4# bin/kafka-topics.sh --bootstrap-server kafka:9092 --topic transcript-topic --describe
Topic: transcript-topic	PartitionCount: 1	ReplicationFactor: 1	Configs: segment.bytes=1073741824
	Topic: transcript-topic	Partition: 0	Leader: 0	Replicas: 0	Isr: 0

Any idea where i am missing?

Ambika

05/07/2021, 2:42 PM

Hi Team - I am trying to create a Hybrid table. I created the offline and _realtime versions of the table. I had the kafka stream loaded with a few events so as soon as I created the tables, the realtime data showed up on the query console. After that I uploaded a CSV with some data using the cli tool LaunchDataIngestionJob . It was successful. But when I tried to query the table again, it didn't show the data that i loaded through the batch ingestion. But when I query the OFFLINE table separately it shows up. Not sure what could be wrong. Could you please guide ?? Attaching some screenshots - So the usecase would be, I have historical data in my warehouse and new data in a stream. I want the Hybrid table so that I can bootstrap using the batch job and then start consuming data in the stream for future data..

Pedro Silva

05/07/2021, 3:20 PM

Hello, Is there a way to configure transformations on json fields to extract a certain property, where this property may not always appear? I've configured the following:

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{
  "columnName": "audioLength",
  "transformFunction": "JSONPATH(result,'$.audioLength')"
}

But the result field, configured as:

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{
  "name": "result",
  "dataType": "STRING"
}

Most of the time will have the following content:

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{
  "metadata": {
    "isMatch": "Y"
  }
}

But sometimes it can be something like:

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{
  "AudioCreated": "2021-05-06T23: 40: 28.6629486",
  "AudioLength": "00: 04: 02.1800000",
  "BlobPath": "068fd3f0-e5d6-499a-bfb0-94491499aba6/9db5efb9-4a72-44ae-a570-8647e1ac896a/33d3c59d-b8e1-4818-be60-124e637fb02b.wav",
  "isValid": true,
  "feedback": "",
  "otherFeedback": "",
  "result": 1,
  "crowdMemberId": "90c97d94-91c3-4587-8c91-26f6e971d52c",
  "tags": null,
  "scriptToExecute": null
}

Aaron Wishnick

05/07/2021, 8:29 PM

I'm getting a lot of errors when trying to run a SegmentCreation job on some Parquet files that were written out by Trino 354. I'll put the errors in a thread. Any ideas?

05/09/2021, 4:18 PM

I am woking on User Authentication Part in pinot.so when user use localhost:9000 it should ask for credntial then should go on pinot UI. Till now I have tried below steps: Created controller and broker file inside apache-pinot-incubating-0.7.1-bin/bin folder 1. Controller.properties 2. broker.properties 3. Start zookeeper 4.Start broker 5.start controller 6. start Pinot Controller.properties content: controller.segment.fetcher.auth.token=Basic YWRtaW46dmVyeXNlY3JldA controller.admin.access.control.factory.class=org.apache.pinot.controller.api.access.BasicAuthAccessControlFactory controller.admin.access.control.principals=admin,user controller.admin.access.control.principals.admin.password=verysecret controller.admin.access.control.principals.user.password=secret controller.admin.access.control.principals.user.tables=myusertable,baseballStats,stuff controller.admin.access.control.principals.user.permissions=READ controller.port=9000 controller.host=localhost controller.helix.cluster.name=PinotCluster controller.zk.str=localhost:2123 controller.data.dir=/user/username/Mypinot broker.properties content: pinot.broker.access.control.class=org.apache.pinot.broker.broker.BasicAuthAccessControlFactory pinot.broker.access.control.principals=admin,user pinot.broker.access.control.principals.admin.password=very secret pinot.broker.access.control.principals.user.password=secret pinot.broker.access.control.principals.user.tables=baseballStats  ,otherstuff command to start Broker: bin/pinot-admin.sh StartBroker-configFileName bin/broker.properties command to start Controller: bin/pinot-admin.sh StartController -configFileName bin/controller.properties command to start Pinot.: bin/quick-start-batch.sh but still its not asking for username and password on localhost:9000.Kindly Suggest what else I need to add.?

Pedro Silva

05/10/2021, 10:32 AM

I'm also getting the following exception from the server instances:

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2021/05/10 10:29:48.876 ERROR [ServerSegmentCompletionProtocolHandler] [HitExecutionView__13__6__20210510T1029Z] Could not send request <http://pinot-controller-0.pinot-controller-headless.dc-pinot.svc.cluster.local:9000/segmentConsumed?name=HitExecutionView__13__6__20210510T1029Z&offset=952660&instance=Server_pinot-server-1.pinot-server-headless.dc-pinot.svc.cluster.local_8098&reason=rowLimit&memoryUsedBytes=7330344&rowCount=12500&streamPartitionMsgOffset=952660>
java.net.SocketTimeoutException: Read timed out
	at java.net.SocketInputStream.socketRead0(Native Method) ~[?:1.8.0_282]
	at java.net.SocketInputStream.socketRead(SocketInputStream.java:116) ~[?:1.8.0_282]
	at java.net.SocketInputStream.read(SocketInputStream.java:171) ~[?:1.8.0_282]
	at java.net.SocketInputStream.read(SocketInputStream.java:141) ~[?:1.8.0_282]
	at shaded.org.apache.http.impl.io.SessionInputBufferImpl.streamRead(SessionInputBufferImpl.java:137) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.io.SessionInputBufferImpl.fillBuffer(SessionInputBufferImpl.java:153) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.io.SessionInputBufferImpl.readLine(SessionInputBufferImpl.java:282) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:138) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:56) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:259) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:163) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:157) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:273) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:125) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:272) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at shaded.org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:108) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at org.apache.pinot.common.utils.FileUploadDownloadClient.sendRequest(FileUploadDownloadClient.java:383) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at org.apache.pinot.common.utils.FileUploadDownloadClient.sendSegmentCompletionProtocolRequest(FileUploadDownloadClient.java:675) ~[pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at org.apache.pinot.server.realtime.ServerSegmentCompletionProtocolHandler.sendRequest(ServerSegmentCompletionProtocolHandler.java:207) [pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at org.apache.pinot.server.realtime.ServerSegmentCompletionProtocolHandler.segmentConsumed(ServerSegmentCompletionProtocolHandler.java:174) [pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at org.apache.pinot.core.data.manager.realtime.LLRealtimeSegmentDataManager.postSegmentConsumedMsg(LLRealtimeSegmentDataManager.java:949) [pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at org.apache.pinot.core.data.manager.realtime.LLRealtimeSegmentDataManager$PartitionConsumer.run(LLRealtimeSegmentDataManager.java:559) [pinot-all-0.7.1-jar-with-dependencies.jar:0.7.1-afa4b252ab1c424ddd6c859bb305b2aa342b66ed]
	at java.lang.Thread.run(Thread.java:748) [?:1.8.0_282]
2021/05/10 10:29:48.877 ERROR [LLRealtimeSegmentDataManager_HitExecutionView__13__6__20210510T1029Z] [HitExecutionView__13__6__20210510T1029Z] Holding after response from Controller: {"streamPartitionMsgOffset":null,"buildTimeSec":-1,"isSplitCommitType":false,"status":"NOT_SENT","offset":-1}

This seems related, the server not being able to contact the controller?

Tamás Nádudvari

05/10/2021, 8:21 PM

Hello, we’re using

RealtimeToOfflineSegmentsTask

for our hybrid table and we ran into a problem in our dev environment. We have time gaps in our data ingest and when it’s larger than the bucket time period, the minion task runs into an error of creating empty segment. After exception the minion fails to update the watermark, thus we’re ending up with a stuck task (trying to create an empty segment over an over again for this specific period). While it’s unlikely to run into this empty segment problem in production, we’re wondering what’s the recommended way to overcome this issue in a dev environment?

Aaron Wishnick

05/10/2021, 9:26 PM

I'm trying to track down where my SegmentCreation job is spending time. It's been running for a few hours, but here are the only time measurements I see:

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Assembled and processed 7990100 records from 17 columns in 121766 ms: 65.618484 rec/ms, 1115.5142 cell/ms
time spent so far 0% reading (237 ms) and 99% processing (121766 ms)
at row 7990100. reading next block
block read in memory in 44 ms. row count = 1418384
Finished building StatsCollector!
Collected stats for 9408484 documents
Created dictionary for INT column: ...
...
RecordReader initialized will read a total of 9408484 records.
at row 0. reading next block
Got brand-new decompressor [.gz]
block read in memory in 133 ms. row count = 7990100
Start building IndexCreator!
Assembled and processed 7990100 records from 17 columns in 127060 ms: 62.884464 rec/ms, 1069.0359 cell/ms
time spent so far 0% reading (133 ms) and 99% processing (127060 ms)
at row 7990100. reading next block
block read in memory in 26 ms. row count = 1418384
Finished records indexing in IndexCreator!
Finished segment seal!
...
Generated 25884 star-tree records from 9408484 segment records
Finished constructing star-tree, got 1228 tree nodes and 2058 records under star-node
Finished creating aggregated documents, got 1227 aggregated records
Finished building star-tree in 276631ms
Starting building star-tree with config: StarTreeV2BuilderConfig[...]
Generated 9408484 star-tree records from 9408484 segment records

It's been stuck at that last line for a long time but still seems to be doing something. All the time measurements only add up to a few minutes. Any idea where it's spending time?

Arun Vasudevan

05/10/2021, 11:26 PM

Hi, Could you guys help me with the Avro -> Pinot Schema Conversion?

Avro Schema:

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{
  "type": "record",
  "name": "Clickstream",
  "namespace": "com.acme.event.clickstream.business",
  "fields": [
    {
      "name": "event_header",
      "type": {
        "type": "record",
        "name": "EventHeader",
        "namespace": "com.acme.event",
        "fields": [
          {
            "name": "event_uuid",
            "type": {
              "type": "string",
              "avro.java.string": "String",
              "logicalType": "uuid"
            },
            "doc": "Universally Unique Identifier for this event "
          },
          {
            "name": "published_timestamp",
            "type": {
              "type": "long",
              "logicalType": "timestamp-millis"
            },
            "doc": "Timestamp in milliseconds since the epoch that the event occurred on its producing device. e.g. <code>System.currentTimeMillis()</code>."
          }]
       }
     }
}

The corresponding Pinot Schema i have is:

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{
  "schemaName": "user_clickstream_v1",
  "dimensionFieldSpecs": [
    {
      "name": "event_header.event_uuid",
      "dataType": "STRING"
    }
  ],
  "dateTimeFieldSpecs": [
    {
      "name": "event_header.published_timestamp",
      "dataType": "LONG",
      "format": "1:MILLISECONDS:EPOCH",
      "granularity": "1:MILLISECONDS"
    }
  ]
}

In the created Pinot Table i see all the values as null….I suspect the issue is in the Schema… Any idea?

Jonathan Meyer

05/11/2021, 3:14 PM

Sorry for bumping the question, maybe it got shadowed by following ones.

Hello

What is the recommended approach to getting the "last non-null value" ?

Use a UDF ?

Charles

05/12/2021, 6:20 AM

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Grpc port is not set for instance: Controller_10.252.125.84_9000

05/12/2021, 7:55 AM

I don't want to show the last server with status as Dead on Pinot UI.