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fix(restore): update the schema and type from 2103 #7838

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merged 3 commits into from May 19, 2021

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@NamanJain8 NamanJain8 commented May 19, 2021

With #7810 change, we changed the format of the predicate. We missed updating the schema and predicate. This PR fixes it.


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@github-actions github-actions bot added the area/enterprise Related to proprietary features label May 19, 2021
@NamanJain8 NamanJain8 merged commit 8504fb1 into release/v21.03-slash May 19, 2021
@NamanJain8 NamanJain8 deleted the naman/fix-type branch May 19, 2021 18:57
NamanJain8 added a commit that referenced this pull request May 24, 2021
With #7810 change, we changed the format of the predicate. We missed updating the schema and predicate. This PR fixes it.

(cherry picked from commit 8504fb1)
harshil-goel pushed a commit that referenced this pull request Jan 13, 2023
With #7810 change, we changed the format of the predicate. We missed updating the schema and predicate. This PR fixes it.
harshil-goel pushed a commit that referenced this pull request Jan 30, 2023
With #7810 change, we changed the format of the predicate. We missed updating the schema and predicate. This PR fixes it.
harshil-goel pushed a commit that referenced this pull request Jan 31, 2023
With #7810 change, we changed the format of the predicate. We missed updating the schema and predicate. This PR fixes it.
harshil-goel pushed a commit that referenced this pull request Feb 2, 2023
With #7810 change, we changed the format of the predicate. We missed updating the schema and predicate. This PR fixes it.
harshil-goel pushed a commit that referenced this pull request Feb 3, 2023
We used to store predicate as <namespace>|<attribute> (pipe | signifies concatenation). We store this as a string. <namespace> is 8 bytes uint64, which when marshaled to JSON bytes mess up the predicate. This is because for the namespace greater than 127, the UTF-8 encoding might take up several bytes (also if the mapping does not exist, then it replaces it with some other rune). This affects three identified places in Dgraph:

Live loader
Backup and List Backup
Http clients and Ratel
Fix:
Fix is to have a UTF-8 string when dealing with JSON. A better idea is to use UTF-8 string even for internal operations. Only when we read/write to badger we convert it into the format of the byte.
New Format: <anmespace>-<attribute> (- is the hyphen literal)

fix(restore): update the schema and type from 2103 (#7838)

With #7810 change, we changed the format of the predicate. We missed updating the schema and predicate. This PR fixes it.

fix(state): fix hex to uint64 response of list of namespaces (#8091)

There is an issue in ExtractNamespaceFromPredicate. The issue is the parsing was done assuming ns in <ns>-<attr> to be decimal (actually it is hexadecimal). This leads to the following issues.

A predicate a-name, it was skipped.
A predicate 11-name was parsed as namespace 11, actually it is namespace 17 (0x11).

fix(backup): handle manifest version logic, update manifest version to 2105 (#7825)

The backward compatibility of the backup's manifest was broken by #7810, although the tool was added (#7815) that enables smooth migration of manifest.
This PR makes backup backward compatible, by updating the manifest(in-memory) after reading.

fix(updatemanifest): update the version of manifest after update (#7828)

We were not updating the manifest version after the updation. This PR fixes that.
harshil-goel pushed a commit that referenced this pull request Feb 3, 2023
We used to store predicate as <namespace>|<attribute> (pipe | signifies concatenation). We store this as a string. <namespace> is 8 bytes uint64, which when marshaled to JSON bytes mess up the predicate. This is because for the namespace greater than 127, the UTF-8 encoding might take up several bytes (also if the mapping does not exist, then it replaces it with some other rune). This affects three identified places in Dgraph:

Live loader
Backup and List Backup
Http clients and Ratel
Fix:
Fix is to have a UTF-8 string when dealing with JSON. A better idea is to use UTF-8 string even for internal operations. Only when we read/write to badger we convert it into the format of the byte.
New Format: <anmespace>-<attribute> (- is the hyphen literal)

fix(restore): update the schema and type from 2103 (#7838)

With #7810 change, we changed the format of the predicate. We missed updating the schema and predicate. This PR fixes it.

fix(state): fix hex to uint64 response of list of namespaces (#8091)

There is an issue in ExtractNamespaceFromPredicate. The issue is the parsing was done assuming ns in <ns>-<attr> to be decimal (actually it is hexadecimal). This leads to the following issues.

A predicate a-name, it was skipped.
A predicate 11-name was parsed as namespace 11, actually it is namespace 17 (0x11).

fix(backup): handle manifest version logic, update manifest version to 2105 (#7825)

The backward compatibility of the backup's manifest was broken by #7810, although the tool was added (#7815) that enables smooth migration of manifest.
This PR makes backup backward compatible, by updating the manifest(in-memory) after reading.

fix(updatemanifest): update the version of manifest after update (#7828)

We were not updating the manifest version after the updation. This PR fixes that.
harshil-goel added a commit that referenced this pull request Feb 3, 2023
…t json marshal issues (#8601)

We used to store predicate as <namespace>|<attribute> (pipe | signifies
concatenation). We store this as a string. <namespace> is 8 bytes
uint64, which when marshaled to JSON bytes mess up the predicate. This
is because for the namespace greater than 127, the UTF-8 encoding might
take up several bytes (also if the mapping does not exist, then it
replaces it with some other rune). This affects three identified places
in Dgraph:

- Live loader using guardian of galaxy
- Backup and List Backup
- Http clients and Ratel
- Schema and predicate

Fix:
Fix is to have a UTF-8 string when dealing with JSON. A better idea is
to use UTF-8 string even for internal operations. Only when we
read/write to badger we convert it into the format of the byte.
New Format: <namespace>-<attribute> (- is the hyphen literal)
<namespace> is a string "81" in hex

We also update the manifest version after update. This diff takes care
that older backups are still compatible and can be used to restore.

Contains: 
#7838
#7828
#7825
#7815
#7810
all-seeing-code pushed a commit that referenced this pull request Feb 8, 2023
…t json marshal issues (#8601)

We used to store predicate as <namespace>|<attribute> (pipe | signifies
concatenation). We store this as a string. <namespace> is 8 bytes
uint64, which when marshaled to JSON bytes mess up the predicate. This
is because for the namespace greater than 127, the UTF-8 encoding might
take up several bytes (also if the mapping does not exist, then it
replaces it with some other rune). This affects three identified places
in Dgraph:

- Live loader using guardian of galaxy
- Backup and List Backup
- Http clients and Ratel
- Schema and predicate

Fix:
Fix is to have a UTF-8 string when dealing with JSON. A better idea is
to use UTF-8 string even for internal operations. Only when we
read/write to badger we convert it into the format of the byte.
New Format: <namespace>-<attribute> (- is the hyphen literal)
<namespace> is a string "81" in hex

We also update the manifest version after update. This diff takes care
that older backups are still compatible and can be used to restore.

Contains: 
#7838
#7828
#7825
#7815
#7810
all-seeing-code pushed a commit that referenced this pull request Feb 8, 2023
…t json marshal issues (#8601)

We used to store predicate as <namespace>|<attribute> (pipe | signifies
concatenation). We store this as a string. <namespace> is 8 bytes
uint64, which when marshaled to JSON bytes mess up the predicate. This
is because for the namespace greater than 127, the UTF-8 encoding might
take up several bytes (also if the mapping does not exist, then it
replaces it with some other rune). This affects three identified places
in Dgraph:

- Live loader using guardian of galaxy
- Backup and List Backup
- Http clients and Ratel
- Schema and predicate

Fix:
Fix is to have a UTF-8 string when dealing with JSON. A better idea is
to use UTF-8 string even for internal operations. Only when we
read/write to badger we convert it into the format of the byte.
New Format: <namespace>-<attribute> (- is the hyphen literal)
<namespace> is a string "81" in hex

We also update the manifest version after update. This diff takes care
that older backups are still compatible and can be used to restore.

Contains: 
#7838
#7828
#7825
#7815
#7810
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