[jira] [Commented] (PHOENIX-5055) Split mutations batches probably affects correctness of index data

["Jaanai (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PHOENIX-5055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16707306#comment-16707306 ] 

Jaanai commented on PHOENIX-5055:
---------------------------------

This is an index out of sync issue

> Split mutations batches probably affects correctness of index data
> ------------------------------------------------------------------
>
>                 Key: PHOENIX-5055
>                 URL: https://issues.apache.org/jira/browse/PHOENIX-5055
>             Project: Phoenix
>          Issue Type: Bug
>    Affects Versions: 5.0.0, 4.14.1
>            Reporter: Jaanai
>            Assignee: Jaanai
>            Priority: Critical
>             Fix For: 5.1.0
>
>         Attachments: ConcurrentTest.java, PHOENIX-5055-v4.x-HBase-1.4.patch
>
>
> In order to get more performance, we split the list of mutations into multiple batches in MutationSate.  For one upsert SQL with some null values that will produce two type KeyValues(Put and DeleteColumn),  These KeyValues should have the same timestamp so that keep on an atomic operation for corresponding the row key.
>  Found incorrect indexed data for the index tables by sqlline.
> !https://gw.alicdn.com/tfscom/TB1nSDqpxTpK1RjSZFGXXcHqFXa.png|width=665,height=400!
>  
> Running the following:
> {code:java}
> conn.createStatement().executeUpdate( "CREATE TABLE " + tableName + " (" + "A VARCHAR NOT NULL PRIMARY KEY," + "B VARCHAR," + "C VARCHAR," + "D VARCHAR) COLUMN_ENCODED_BYTES = 0"); 
> conn.createStatement().executeUpdate("CREATE INDEX " + indexName + " on " + tableName + " (C) INCLUDE(D)"); 
> conn.createStatement().executeUpdate("UPSERT INTO " + tableName + "(A,B,C,D) VALUES ('A2','B2','C2','D2')"); 
> conn.createStatement().executeUpdate("UPSERT INTO " + tableName + "(A,B,C,D) VALUES ('A3','B3', 'C3', null)");
> {code}
> dump IndexMemStore:
> {code:java}
> hbase.index.covered.data.IndexMemStore(117): Inserting:\x01A3/0:D/1542190446218/DeleteColumn/vlen=0/seqid=0/value= phoenix.hbase.index.covered.data.IndexMemStore(133): Current kv state: phoenix.hbase.index.covered.data.IndexMemStore(135): KV: \x01A3/0:B/1542190446167/Put/vlen=2/seqid=5/value=B3 phoenix.hbase.index.covered.data.IndexMemStore(135): KV: \x01A3/0:C/1542190446167/Put/vlen=2/seqid=5/value=C3 phoenix.hbase.index.covered.data.IndexMemStore(135): KV: \x01A3/0:D/1542190446218/DeleteColumn/vlen=0/seqid=0/value= phoenix.hbase.index.covered.data.IndexMemStore(135): KV: \x01A3/0:_0/1542190446167/Put/vlen=1/seqid=5/value=x phoenix.hbase.index.covered.data.IndexMemStore(137): ========== END MemStore Dump ==================
> {code}
>  
> The DeleteColumn's timestamp larger than other mutations.
>  



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