I am using ES 1.5.2 version . Is shard allocation causes heap space issues ? can you please explain me what will happen if shards allocation disabled , es node restart and shards allocation enabled again. in this node restart process i found my nodes running out of heap space i have 24 GB of machines with 12 GB of heap space for each es node in my cluster . please advice me
some times my heap is also not clearing when restarted my cluster. can you please explain me why it is happening but when i do _cache/clear and flush heap space is clearing. please advice me where i have to configure these settings.