Alexander Sterligov created CASSANDRA-8203:
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             Summary: Unexpected null static column
                 Key: CASSANDRA-8203
                 URL: https://issues.apache.org/jira/browse/CASSANDRA-8203
             Project: Cassandra
          Issue Type: Bug
            Reporter: Alexander Sterligov


Schema:
{quote}
cqlsh:iss> describe table target_state;

CREATE TABLE iss.target_state (
    cell ascii,
    host ascii,
    service ascii,
    active ascii,
    cell_etag timeuuid static,
    etag timeuuid,
    states map<ascii, ascii>,
    PRIMARY KEY (cell, host, service)
) WITH CLUSTERING ORDER BY (host ASC, service ASC)
    AND bloom_filter_fp_chance = 0.01
    AND caching = '\{"keys":"ALL", "rows_per_partition":"NONE"}'
    AND comment = ''
    AND compaction = \{'min_threshold': '4', 'unchecked_tombstone_compaction': 
'true', 'tombstone_compaction_interval': '43200', 'class': 
'org.apache.cassandra.db.compaction.LeveledCompactionStrategy', 
'max_threshold': '32'}
    AND compression = \{'sstable_compression': 
'org.apache.cassandra.io.compress.LZ4Compressor'}
    AND dclocal_read_repair_chance = 0.1
    AND default_time_to_live = 0
    AND gc_grace_seconds = 86400
    AND max_index_interval = 2048
    AND memtable_flush_period_in_ms = 0
    AND min_index_interval = 128
    AND read_repair_chance = 0.0
    AND speculative_retry = '99.0PERCENTILE';
{quote}

Range query:
{quote}
cqlsh:iss> select cell, host, service, cell_etag, etag from target_state LIMIT 
50000;
{quote}

Contains in the middle of results:
{quote}
60630000000065955650000000063097470000054552016:ya(200,15) |  
ams1-0003.search.yandex.net |   18265 |                                 null | 
737a05e0-5532-11e4-bf0b-efa731c31cd0
{quote}

Data is unchanged, and another query gives non-null cell_etag column
{quote}
cqlsh:iss> select host, service, cell_etag, etag from target_state where cell = 
'60630000000065955650000000063097470000054552016:ya(200,15)' and host = 
'ams1-0003.search.yandex.net' and service = '18265';

 host                        | service | cell_etag                            | 
etag
-----------------------------+---------+--------------------------------------+--------------------------------------
 ams1-0003.search.yandex.net |   18265 | bc635e60-5ec3-11e4-bdfd-9f65487c7454 | 
737a05e0-5532-11e4-bf0b-efa731c31cd0

(1 rows)

{quote}



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