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From James Taylor <jamestay...@apache.org>
Subject Re: Exception from RowCounter
Date Sat, 25 Jul 2015 17:23:06 GMT
Hi Zack,
If you find an issue, the best way for us is to come up with the smallest
set of data the demonstrates the issue and a small script that consistently
reproduces it. It's just not feasible for us to work from a billion row
data set.

RowCounter is not  a Phoenix API, so you'll need to go to the HBase email
lists for help on that.

>From a schema design perspective, it seems a bit unwieldy what you're
doing. Why not just salt the data table instead of manually salting it and
managing that yourself?

Thanks,
James

On Sat, Jul 25, 2015 at 4:04 AM, Riesland, Zack <Zack.Riesland@sensus.com>
wrote:

>  I decided to start from scratch with my table schema in attempt to get a
> better distribution across my regions/region servers.
>
>
>
> So, I created a table like this:
>
>
>
> CREATE TABLE fma.er_keyed_gz_hashed_indexed_meterkey_immutable (
>
>     hashed_key varchar not null,
>
>     meter_key varchar ,
>
>     …
>
>     endpoint_id integer,
>
>     sample_point  integer not null,
>
>    …
>
>     CONSTRAINT pk_fma_er_keyed_gz_hashed_indexed_meterkey_immutable
> PRIMARY KEY (hashed_key, sample_point)
>
>     )
>
>     COMPRESSION='GZ'
>
>     SPLIT ON ('0-', '1-', '2-', '3-', '4-', '5-', '6-', '7-', '8-', '9-',
> '10-', '11-', '12-', '13-', '14-', '15-', '16-', '17-', '18-', '19-',
> '20-', '21-', '22-', '23-', '24-', '25-', '26-', '27-', '28-', '29-',
> '30-', '31-', '32-', '33-', '34-', '35-', '36-', '37-', '38-', '39-',
> '40-', '41-', '42-', '43-', '44-', '45-', '46-', '47-', '48-', '49-',
> '50-', '51-', '52-', '53-', '54-', '55-', '56-', '57-', '58-', '59-',
> '60-', '61-', '62-', '63-', '64-', '65-', '66-', '67-', '68-', '69-',
> '70-', '71-', '72-', '73-', '74-', '75-', '76-', '77-', '78-', '79-',
> '80-', '81-', '82-', '83-', '84-', '85-', '86-', '87-', '88-', '89-',
> '90-', '91-', '92-', '93-', '94-', '95-', '96-', '97-', '98-', '99-',
> '100-', '101-', '102-', '103-', '104-', '105-', '106-', '107-', '108-',
> '109-', '110-', '111-', '112-', '113-', '114-', '115-', '116-', '117-',
> '118-', '119-', '120-', '121-', '122-', '123-', '124-', '125-', '126-',
> '127-', '128-', '129-', '130-', '131-', '132-', '133-', '134-', '135-',
> '136-', '137-', '138-', '139-', '140-', '141-', '142-', '143-', '144-',
> '145-', '146-', '147-', '148-', '149-', '150-', '151-', '152-', '153-',
> '154-', '155-', '156-', '157-', '158-', '159-', '160-', '161-', '162-',
> '163-', '164-', '165-', '166-', '167-', '168-', '169-', '170-', '171-',
> '172-', '173-', '174-', '175-', '176-', '177-', '178-', '179-', '180-',
> '181-', '182-', '183-', '184-', '185-', '186-', '187-', '188-', '189-',
> '190-', '191-', '192-', '193-', '194-', '195-', '196-', '197-', '198-',
> '199-', '200-', '201-', '202-', '203-', '204-', '205-', '206-', '207-',
> '208-', '209-', '210-', '211-', '212-', '213-', '214-', '215-', '216-',
> '217-', '218-', '219-', '220-', '221-', '222-', '223-', '224-', '225-',
> '226-', '227-', '228-', '229-', '230-', '231-', '232-', '233-', '234-',
> '235-', '236-', '237-', '238-', '239-', '240-', '241-', '242-', '243-',
> '244-', '245-', '246-', '247-', '248-', '249-', '250-', '251-', '252-',
> '253-', '254-', '255-', '256-', '257-', '258-', '259-', '260-', '261-',
> '262-', '263-', '264-', '265-', '266-', '267-', '268-', '269-', '270-',
> '271-', '272-', '273-', '274-', '275-', '276-', '277-', '278-', '279-',
> '280-', '281-', '282-', '283-', '284-', '285-', '286-', '287-', '288-',
> '289-', '290-', '291-', '292-', '293-', '294-', '295-', '296-', '297-',
> '298-', '299-', '300-', '301-', '302-', '303-', '304-', '305-', '306-',
> '307-', '308-', '309-', '310-', '311-', '312-', '313-', '314-', '315-',
> '316-', '317-', '318-', '319-', '320-', '321-', '322-', '323-', '324-',
> '325-', '326-', '327-', '328-', '329-', '330-', '331-', '332-', '333-',
> '334-', '335-', '336-', '337-', '338-', '339-', '340-', '341-', '342-',
> '343-', '344-', '345-', '346-', '347-', '348-', '349-', '350-', '351-',
> '352-', '353-', '354-', '355-', '356-', '357-', '358-', '359-', '360-',
> '361-', '362-', '363-', '364-', '365-', '366-', '367-', '368-', '369-',
> '370-', '371-', '372-', '373-', '374-', '375-', '376-', '377-', '378-',
> '379-', '380-', '381-', '382-', '383-', '384-', '385-', '386-', '387-',
> '388-', '389-', '390-', '391-', '392-', '393-', '394-', '395-', '396-',
> '397-', '398-', '399-', '400-', '401-', '402-', '403-', '404-', '405-',
> '406-', '407-', '408-', '409-', '410-', '411-', '412-', '413-', '414-',
> '415-', '416-', '417-', '418-', '419-', '420-', '421-', '422-', '423-',
> '424-', '425-', '426-', '427-', '428-', '429-', '430-', '431-', '432-',
> '433-', '434-', '435-', '436-', '437-', '438-', '439-', '440-', '441-',
> '442-', '443-', '444-', '445-', '446-', '447-', '448-', '449-', '450-',
> '451-', '452-', '453-', '454-', '455-', '456-', '457-', '458-', '459-',
> '460-', '461-', '462-', '463-', '464-', '465-', '466-', '467-', '468-',
> '469-', '470-', '471-', '472-', '473-', '474-', '475-', '476-', '477-',
> '478-', '479-', '480-', '481-', '482-', '483-', '484-', '485-', '486-',
> '487-', '488-', '489-', '490-', '491-', '492-', '493-', '494-', '495-',
> '496-', '497-', '498-', '499-', '500-', '501-', '502-', '503-', '504-',
> '505-', '506-', '507-', '508-', '509-', '510-', '511-')
>
>
>
> The hashed key is the endpoint_id % 511, which is why the splitting is
> done this way.
>
>
>
> I also added 2 secondary indexes, because I need to be able to query based
> on meter_key or endpoint_id + sample_point:
>
>
>
> CREATE INDEX fma_er_keyed_gz_hashed_indexed_endpoint_include_sample_point
> on fma.er_keyed_gz_hashed_indexed_meterkey_immutable (endpoint_id) include
> (sample_point) SALT_BUCKETS = 256; --256 is max
>
>
>
> CREATE INDEX fma_er_keyed_gz_hashed_indexed_meterkey on
> fma.er_keyed_gz_hashed_indexed_meterkey_immutable (meter_key) SALT_BUCKETS
> = 256; --256 is max
>
>
>
> This all seemed to work well.
>
>
>
> Then I use the bulk import from CSV tool and imported about 1 billion rows.
>
>
>
> This also seemed to work.
>
>
>
> I can query by hashed_key and get immediate results.
>
>
>
> If I query by endpoint_id or meter_key, it is MUCH slower (clue 1 that
> there’s a problem), but it gives me results eventually.
>
>
>
> However, when I try to get a count, it returns 0:
>
>
>
>
>
> > select count(*) from fma.er_keyed_gz_hashed_indexed_meterkey_immutable;
>
> +------------+
>
> |  COUNT(1)  |
>
> +------------+
>
> | 0          |
>
> +------------+
>
> 1 row selected (0.075 seconds)
>
>
>
> And when I try to do a RowCounter job, it fails completely (see below).
>
>
>
> Can anyone help me diagnose what is going on here?
>
>
>
> This is a cluster with 6 large region servers, that each have about 600
> regions (from this and other tables).
>
>
>
> This table has about 12 columns and 1 billion rows currently.
>
>
>
> Thanks!
>
>
>
> #  hbase org.apache.hadoop.hbase.mapreduce.RowCounter
> fma.er_keyed_gz_hashed_indexed_meterkey_immutable;
>
>
>
>
>
> 2015-07-25 06:53:36,425 DEBUG [main] util.RegionSizeCalculator: Region
> sizes calculated
>
> 2015-07-25 06:53:36,427 WARN  [main] hbase.HBaseConfiguration: Config
> option "hbase.regionserver.lease.period" is deprecated. Instead, use
> "hbase.client.scanner.timeout.period"
>
> 2015-07-25 06:53:36,468 WARN  [main]
> client.ConnectionManager$HConnectionImplementation: Encountered problems
> when prefetch hbase:meta table:
>
> org.apache.hadoop.hbase.TableNotFoundException: Cannot find row in
> hbase:meta for table: fma.er_keyed_gz_hashed_indexed_meterkey_immutable,
> row=fma.er_keyed_gz_hashed_indexed_meterkey_immutable,,99999999999999
>
>         at
> org.apache.hadoop.hbase.client.MetaScanner.metaScan(MetaScanner.java:164)
>
>         at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.prefetchRegionCache(ConnectionManager.java:1222)
>
>         at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionInMeta(ConnectionManager.java:1286)
>
>         at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1135)
>
>         at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1118)
>
>         at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1075)
>
>         at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.getRegionLocation(ConnectionManager.java:909)
>
>         at
> org.apache.hadoop.hbase.client.HTable.getRegionLocation(HTable.java:528)
>
>         at
> org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.getSplits(TableInputFormatBase.java:165)
>
>         at
> org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.java:597)
>
>         at
> org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:614)
>
>         at
> org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:492)
>
>         at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1296)
>
>         at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1293)
>
>         at java.security.AccessController.doPrivileged(Native Method)
>
>         at javax.security.auth.Subject.doAs(Subject.java:415)
>
>         at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
>
>         at org.apache.hadoop.mapreduce.Job.submit(Job.java:1293)
>
>         at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1314)
>
>         at
> org.apache.hadoop.hbase.mapreduce.RowCounter.main(RowCounter.java:191)
>
> 2015-07-25 06:53:36,471 INFO  [main] mapreduce.JobSubmitter: Cleaning up
> the staging area /user/root/.staging/job_1437395072897_1775
>
> Exception in thread "main" org.apache.hadoop.hbase.TableNotFoundException:
> fma.er_keyed_gz_hashed_indexed_meterkey_immutable
>
>         at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegionInMeta(ConnectionManager.java:1319)
>
>         at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1135)
>
>         at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1118)
>
>         at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.locateRegion(ConnectionManager.java:1075)
>
>         at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.getRegionLocation(ConnectionManager.java:909)
>
>         at
> org.apache.hadoop.hbase.client.HTable.getRegionLocation(HTable.java:528)
>
>         at
> org.apache.hadoop.hbase.mapreduce.TableInputFormatBase.getSplits(TableInputFormatBase.java:165)
>
>         at
> org.apache.hadoop.mapreduce.JobSubmitter.writeNewSplits(JobSubmitter.java:597)
>
>         at
> org.apache.hadoop.mapreduce.JobSubmitter.writeSplits(JobSubmitter.java:614)
>
>         at
> org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:492)
>
>         at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1296)
>
>         at org.apache.hadoop.mapreduce.Job$10.run(Job.java:1293)
>
>         at java.security.AccessController.doPrivileged(Native Method)
>
>         at javax.security.auth.Subject.doAs(Subject.java:415)
>
>         at
> org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1628)
>
>         at org.apache.hadoop.mapreduce.Job.submit(Job.java:1293)
>
>         at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1314)
>
>         at
> org.apache.hadoop.hbase.mapreduce.RowCounter.main(RowCounter.java:191)
>

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