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From "Riesland, Zack" <Zack.Riesl...@sensus.com>
Subject Exception from RowCounter
Date Sat, 25 Jul 2015 11:04:39 GMT
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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