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From Adrian Sandulescu <sandulescu.adr...@gmail.com>
Subject Re: exportSnapshot MISSING_FILES
Date Wed, 09 Oct 2013 10:06:41 GMT
Would this question be better suited for the developer mailing list?

Adrian


On Tue, Oct 8, 2013 at 7:01 PM, Adrian Sandulescu <
sandulescu.adrian@gmail.com> wrote:

> Also, here are the files in S3:
> $ hadoop fs -ls
> s3n://AKIAIWNEBAESDM4DKBGA:UEFai8K1IBrjOKlXB2hbIbTFDJ8apubuA01LCc02@hbase-export
> /hbase/.archive/campaign_digital_ad_time_dev/d9e6cff519bdd232d7a7f8eb676d92ee/v/6912d21c32754e7cb34ac85952a67ce1
> Found 1 items
> -rwxrwxrwx   1  741047906 2013-10-08 13:45
> s3n://AKIAIWNEBAESDM4DKBGA:UEFai8K1IBrjOKlXB2hbIbTFDJ8apubuA01LCc02@hbase-export
> /hbase/.archive/campaign_digital_ad_time_dev/d9e6cff519bdd232d7a7f8eb676d92ee/v/6912d21c32754e7cb34ac85952a67ce1
>
> $ hadoop fs -ls
> s3://AKIAIWNEBAESDM4DKBGA:UEFai8K1IBrjOKlXB2hbIbTFDJ8apubuA01LCc02@hbase-export
> /hbase/.archive/campaign_digital_ad_time_dev/d9e6cff519bdd232d7a7f8eb676d92ee/v/6912d21c32754e7cb34ac85952a67ce1
> Found 1 items
> -rwxrwxrwx   1  741047906 1970-01-01 00:00
> s3://AKIAIWNEBAESDM4DKBGA:UEFai8K1IBrjOKlXB2hbIbTFDJ8apubuA01LCc02@hbase-export
> /hbase/.archive/campaign_digital_ad_time_dev/d9e6cff519bdd232d7a7f8eb676d92ee/v/6912d21c32754e7cb34ac85952a67ce1
>
> Thank you,
> Adrian
>
>
> On Tue, Oct 8, 2013 at 6:44 PM, Adrian Sandulescu <
> sandulescu.adrian@gmail.com> wrote:
>
>> Yes, I was just digging.
>>
>> From a successful s3n:// import
>>
>> 2013-10-08 14:57:04,816 INFO org.apache.hadoop.hbase.snapshot.ExportSnapshot: copy
file input=v/campaign_digital_ad_time_dev=d9e6cff519bdd232d7a7f8eb676d92ee-6912d21c32754e7cb34ac85952a67ce1
output=hdfs://mycluster:8020/hbase/.archive/campaign_digital_ad_time_dev/d9e6cff519bdd232d7a7f8eb676d92ee/v/6912d21c32754e7cb34ac85952a67ce1
>> 2013-10-08 14:57:04,965 INFO org.apache.hadoop.fs.s3native.NativeS3FileSystem: Opening
's3n://AKIAIWNEBAESDM4DKBGA:UEFai8K1IBrjOKlXB2hbIbTFDJ8apubuA01LCc02@hbase-export/hbase/.archive/campaign_digital_ad_time_dev/d9e6cff519bdd232d7a7f8eb676d92ee/v/6912d21c32754e7cb34ac85952a67ce1'
for reading
>> 2013-10-08 14:57:05,039 INFO org.apache.hadoop.fs.s3native.NativeS3FileSystem: Opening
key 'hbase/.archive/campaign_digital_ad_time_dev/d9e6cff519bdd232d7a7f8eb676d92ee/v/6912d21c32754e7cb34ac85952a67ce1'
for reading at position '0'
>> 2013-10-08 14:57:05,299 INFO org.apache.hadoop.hbase.snapshot.ExportSnapshot: Skip
copy v/campaign_digital_ad_time_dev=d9e6cff519bdd232d7a7f8eb676d92ee-6912d21c32754e7cb34ac85952a67ce1
to hdfs://mycluster:8020/hbase/.archive/campaign_digital_ad_time_dev/d9e6cff519bdd232d7a7f8eb676d92ee/v/6912d21c32754e7cb34ac85952a67ce1,
same file.
>> 2013-10-08 14:57:05,300 INFO org.apache.hadoop.hbase.snapshot.ExportSnapshot: copy
completed for input=v/campaign_digital_ad_time_dev=d9e6cff519bdd232d7a7f8eb676d92ee-6912d21c32754e7cb34ac85952a67ce1
output=hdfs://mycluster:8020/hbase/.archive/campaign_digital_ad_time_dev/d9e6cff519bdd232d7a7f8eb676d92ee/v/6912d21c32754e7cb34ac85952a67ce1
>>
>> From a failed s3:// import
>>
>> 2013-10-08 15:27:21,810 INFO org.apache.hadoop.hbase.snapshot.ExportSnapshot: copy
file input=v/campaign_digital_ad_time_dev=d9e6cff519bdd232d7a7f8eb676d92ee-6912d21c32754e7cb34ac85952a67ce1
output=hdfs://mycluster:8020/hbase/.archive/campaign_digital_ad_time_dev/d9e6cff519bdd232d7a7f8eb676d92ee/v/6912d21c32754e7cb34ac85952a67ce1
>> 2013-10-08 15:27:21,834 ERROR org.apache.hadoop.hbase.snapshot.ExportSnapshot: Unable
to open source file=v/campaign_digital_ad_time_dev=d9e6cff519bdd232d7a7f8eb676d92ee-6912d21c32754e7cb34ac85952a67ce1
>> java.io.IOException: No such file.
>> 	at org.apache.hadoop.fs.s3.S3FileSystem.checkFile(S3FileSystem.java:181)
>> 	at org.apache.hadoop.fs.s3.S3FileSystem.open(S3FileSystem.java:246)
>> 	at org.apache.hadoop.hbase.io.FileLink$FileLinkInputStream.tryOpen(FileLink.java:289)
>> 	at org.apache.hadoop.hbase.io.FileLink$FileLinkInputStream.<init>(FileLink.java:120)
>> 	at org.apache.hadoop.hbase.io.FileLink$FileLinkInputStream.<init>(FileLink.java:111)
>> 	at org.apache.hadoop.hbase.io.FileLink.open(FileLink.java:390)
>> 	at org.apache.hadoop.hbase.snapshot.ExportSnapshot$ExportMapper.openSourceFile(ExportSnapshot.java:302)
>> 	at org.apache.hadoop.hbase.snapshot.ExportSnapshot$ExportMapper.copyFile(ExportSnapshot.java:175)
>> 	at org.apache.hadoop.hbase.snapshot.ExportSnapshot$ExportMapper.map(ExportSnapshot.java:146)
>> 	at org.apache.hadoop.hbase.snapshot.ExportSnapshot$ExportMapper.map(ExportSnapshot.java:95)
>> 	at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:140)
>> 	at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:672)
>> 	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:330)
>> 	at org.apache.hadoop.mapred.Child$4.run(Child.java:268)
>> 	at java.security.AccessController.doPrivileged(Native Method)
>> 	at javax.security.auth.Subject.doAs(Subject.java:396)
>> 	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408)
>> 	at org.apache.hadoop.mapred.Child.main(Child.java:262)
>>
>> Thank you,
>> Adrian
>>
>>
>> On Tue, Oct 8, 2013 at 5:56 PM, Ted Yu <yuzhihong@gmail.com> wrote:
>>
>>> bq. 13/10/08 13:32:01 INFO mapred.JobClient:     MISSING_FILES=1
>>>
>>> Are you able to provide more context from job output ?
>>>
>>> Thanks
>>>
>>>
>>> On Tue, Oct 8, 2013 at 6:35 AM, Adrian Sandulescu <
>>> sandulescu.adrian@gmail.com> wrote:
>>>
>>> > Hello everyone,
>>> >
>>> > I'm using this tool to export and "import" snapshots from S3:
>>> >
>>> >
>>> https://github.com/lospro7/snapshot-s3-util/blob/master/src/main/java/com/imgur/backup/SnapshotS3Util.java
>>> >
>>> > I'm using this tool because it seems like a better option than
>>> ExportTable,
>>> > considering there isn't another HDFS cluster on hand.
>>> >
>>> > It uses the following trick to make exportSnapshot "import" from S3 to
>>> the
>>> > local HDFS.
>>> >
>>> >             // Override dfs configuration to point to S3
>>> >             config.set("fs.default.name", s3protocol + accessKey + ":"
>>> > + accessSecret + "@" + bucketName);
>>> >             config.set("fs.defaultFS", s3protocol + accessKey + ":" +
>>> > accessSecret  + "@" + bucketName);
>>> >             config.set("fs.s3.awsAccessKeyId", accessKey);
>>> >             config.set("fs.s3.awsSecretAccessKey", accessSecret);
>>> >             config.set("hbase.tmp.dir", "/tmp/hbase-${user.name}");
>>> >             config.set("hbase.rootdir", s3Url);
>>> >
>>> >
>>> > Imports work great, but only when using the s3n:// protocol (which
>>> means
>>> > and HFile limit of 5GB).
>>> > When using the s3:// protocol, I get the following:
>>> > 13/10/08 13:32:01 INFO mapred.JobClient:     MISSING_FILES=1
>>> >
>>> > The author said he wasn't able to debug it and just uses s3n:// until
>>> it
>>> > becomes a problem.
>>> >
>>> > Has anyone encountered this when using exportSnapshot?
>>> > Can you please point me in the right direction?
>>> >
>>> > Adrian
>>> >
>>>
>>
>>
>

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