Pyspark not launching

Hi Team,

Facing issue in launching pyspark. Please ifnd the error and let me know how to resolve this.

[adityagtiwari92@gw01 ~]$ pyspark --conf spark.ui.port=22322 --master yarn-client
Multiple versions of Spark are installed but SPARK_MAJOR_VERSION is not set
Spark1 will be picked by default
Java HotSpot™ 64-Bit Server VM warning: INFO: os::commit_memory(0x00006ce5cf000000, 351272960, 0) failed; error=‘Cannot allocate memory’ (errno=12)
[adityagtiwari92@gw01 ~]$