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)
